How to write a proposal for selling a productcông việc

Task : - create ML/DL model which justify 95% or above success in intraday trading - data should be from 2010 til date -the model should deployed on cloud like aws or any other - should send a real time notofication on telegram with buying range ,selling ranges , Time,trading pair and result after specified time

I am seeking an expert with a deep understanding of WooCommerce and SEO, who can assist in driving sales through search for my e-commerce platform selling physical products. Responsibilities include: - Implementing effective SEO strategies to improve product visibility - Optimizing product descriptions, tags, and website content for maximum search engine performance - Monitoring SEO progress and creating reports The ideal candidate should have: - Experience in WooCommerce - A proven track record in SEO, particularly in driving sales - Deep understanding of organic search trends. Your role will be critical in achieving our sales targets through improved search performance. If you have the necessary skills and a proven track...

I require a proficient app developer to create a dynamic multivendor application for selling clothes. This platform should be compatible with both iOS and Android. Key Features: - Implement a vibrant and energetic design aesthetic that resonates with my brand. - Payment integration with Tripartie. Ideal Candidate: - A developer with extensive experience in creating multivendor apps. - Proven background in designing mobile apps with a vibrant and energetic feel. - Demonstrated expertise in Tripartie integration. Your contribution will be crucial to the success of the product, so I am counting on your skills and creativity to make this app stand out from the competition.

I'm seeking a 3D artist to create a visually appealing and high-quality 3D render of my product along with simple technical drawings (front, side, top). The render will be used as a key visual for my upcoming product launch. Key requirements: - Create a 3D model of the product in aluminum and resin finish. - Ensure the realism and quality of the render for a professional and engaging appearance. Ideal skills and experience: - Proficiency in 3D modeling and rendering software (e.g. Blender, 3ds Max, Maya). - Experience in creating high-quality, photorealistic 3D renders of products. - Strong understanding of different materials and textures, with the ability to create a metallic finish. The...

I'm looking for a skilled digital creator for my physical product. The aim is to take high-quality pictures of it, with a focus on creating a realistic and natural look. Key requirements include: - Proficiency in product photography - Ability to create realistic and natural imagery - Experience in marketing design and visuals The pictures you create will be used across both social media and my e-commerce website. Your work will be a key part of my marketing strategy, so I'm looking for someone who can turn these images into something truly outstanding. Ideal skills: - Product photography - Marketing design - Digital content creation - Image editing and enhancement.

I need a seasoned developer with proficiency in building Android applications to create an app focused on selling diet plans on a subscription basis. Key Features Needed: - **Meal Tracking**: The app should allow users to keep track of their daily food intake. - **Progress Tracking**: Users should be able to monitor their progress closely. - **Personalized Recommendations**: The app should provide suggestions tailored to each individual's dieting needs and progress. User Authentication: Users should be able to register and log in using their Email and password, social media accounts or their Google sign-in details. This calls for a developer with knowledge and experience in App Security and OAuth authentication...

I'm looking for a 3D artist to provide clear product renderings. I have existing product images, however the product name will be changing, so I need someone to update the existing files with the new name and mock up some new 3D images of the product (cans), 4 packs, and cartons. Ideal Expertise: - Strong portfolio in 3D product rendering - Ability to make small copy updates to existing artwork Main Deliverables: - High-quality 3D rendered images I appreciate your attention to detail and look forward to seeing your portfolios.

I’m seeking a knowledgeable professional experienced in online educational content creation. Specifically, I'm interested in crafting an extensive 4 to 6-week course to guide event planning novices and professionals alike towards mastery. Comprehensive coverage of topics is crucial, with inclusion of: - Event planning basics - Venue selection and setup - Marketing and promotion - Budgeting and financial management - On-site coordination and logistics - Best practices in event planning Unfortunately, I didn't specify the platform I'd prefer for course hosting; for this reason, freelancers with versatility across leading educational platforms (YouTube, Udemy, Teachable, etc.) are favored. Please present your platform recommen...

I'm looking to create an AI-driven application that allows users to virtually try on traditional Southeast Asian wedding clothes. They will also be able to choose from different locations as a background. This app should be compatible with Android and iOS platforms. Key Elements: - Target Audience: This app is primarily designed for individuals planning their wedding. The aim is to help them visualize and choose traditional Southeast Asian wedding attire. - Traditional Attire: The app needs to have a selection of Thai traditional wedding attire and Cambodian wedding clothes. These specific attires are essential for the app's purpose. Expected Features: - User-Friendly Interface: The app should have a simpl...

I'm looking for a talented designer to create a modern and sleek photo collage that will be used for social media promotion, specifically on Instagram. Key Requirements: - Design a photo collage that embodies a modern and sleek style - Optimize the collage for Instagram, considering its layout and aspect ratio - Prior experience in designing content for Instagram will be highly beneficial The ideal candidate should have a solid portfolio showcasing their design skills, particularly within the realm of social media content. They should also be able to demonstrate a good understanding of modern aesthetics and trends. I have attached example

I am in need of a talented video producer to create a webapp demonstration video for the upcoming launch of our new service. The primary objective of the video will be to introduce our service to the general public in a captivating and engaging way. Please only apply if you can work now and produce in a few hours. Script is provided. Key Requirements: - Target Audience: The video will be tailored for the general public. It should be able to resonate, engage, and inform a wide audience about our service's features and benefits. - Background Music: We'd like background music with vocals to be included in the video. The music should complement the visuals and help set the right mood for p...

...looking for an experienced mobile app developer to create an e-commerce application for both iOS and Android platforms. Key Features: - Shopping Cart: The app should include a seamless and user-friendly shopping cart system. - Payment Integration: Secure and reliable payment gateways need to be incorporated to ensure smooth transactions for users. Ideal Skills: - Prior experience in developing e-commerce mobile applications - Proficiency in iOS and Android app development - Strong understanding of shopping cart and payment gateway integration - Ability to create a visually appealing and intuitive user interface - Experience with ensuring app security and data protection I'm aiming for a modern, respo...

I'm looking for a professional to help me set up and design a Shopify-based online store for selling hair products. Key Points: - **Platform & Payment Gateway:** Proficiency in Shopify is a must, as the site will be built on this platform. Additionally, I am looking to integrate Square as the payment gateway. - **Design Style:** The website should follow a modern and sleek design style. I'm aiming for a clean and polished look that matches the quality of the products we'll be selling. Ideal Skills and Experience: - Extensive experience in building and customizing Shopify stores - Prior experience working with Square payment gateway integration - A portfolio showcasing modern and ...

I need skilled freelance salesperson to help generate revenue by selling conference seats and securing exhibitors for an upcoming ESG National Conference. - Target Audience: The conference is tailored for a variety of audiences. These include business professionals, legal practitioners, industry experts, government officials, oil and gas industry players, environmental NGOs, human capital sector representatives and regulatory bodies. - Main Objective: The primary focus of this conference is to promote knowledge sharing and facilitate networking opportunities. As a sales representative, your ability to convey the value of participation for these targets will be crucial. - Sales Channels: You'll be expected to uti...

I'm in need of a skilled label designer to create product labels for me. Requirements: - Design of product labels: The task at hand is to design eye-catching and professional product labels. Key considerations: - Style: I'm open to various design styles, so I'm looking for a designer with a good sense of creativity. - Urgency: The project is on a tight deadline - the labels need to be designed within a week. Ideal Candidate: - Proficient in label design with a strong portfolio of similar work. - Ability to work quickly without compromising on quality. - Good communication skills to ensure the design aligns with my brand requirements. Please attach y...

...specialist to help enhance my e-commerce website's online visibility, search engine rankings, and organic traffic. - The primary goal is to increase the site's online visibility, ensuring that it's easily discoverable and accessible to potential customers. - Improving search engine rankings is crucial, as higher rankings will lead to greater visibility and, subsequently, more visitors. - Generating organic traffic is another key aim. This will involve optimizing the website to attract visitors through unpaid search engine results. My target audience for this website is other e-commerce businesses, so understanding SEO in an e-commerce context is important. ****Job In a nut shell 5 Hrs work :- Set up Retargeting Ad w...

Project Proposal: Veristaff MVP Development 1. Introduction Veristaff is a new East African background check company focused on providing secure and efficient verification services to small and medium businesses (SMBs). We are seeking a talented and experienced developer (or development team) to build our Minimum Viable Product (MVP). 2. Project Overview The MVP will be a user-friendly online platform that allows SMBs in East Africa to request and manage background checks for potential hires. The initial focus will be on one core services: Employment Verification: Verifying past employment history by contacting previous employers (with candidate authorization). The platform will offer a starter package with a limi...

I'm on the lookout for an experienced developer who can create a website Initial Coin Offering (ICO) that will help raise funds for my residential development project in real estate. This ICO website should be easy to navigate, secure, and user-friendly. Prospective contributors should be able to purchase digital tokens smoothly. Requirements: - Significant experience in setting up ICO pages - Proven track record in creating secure, high-performing websites - Experience with payment gateways Your task will include: - Designing a user-friendly interface - Implementing secure payment methods - Ensuring the website is operational and bug-free Please, include examples of similar ICOs you've developed in your proposal. I look forward...

I'm in need of a talented professional to craft a pitch deck writer. The ideal candidate must be capable of creating a compelling narrative that aligns with my business objectives, while also satisfying the needs of potential investors. Key responsibilities will include: - Market Analysis: The pitch deck must feature a detailed analysis of the target market and its potential for growth. It should also highlight key trends and opportunities that could influence the success of my venture. - Business Model: A clear and concise breakdown of my business model is essential. The writer should be able to articulate how my product/service creates value for customers, while also demonstrating its revenue potential. ...

I am looking for an expert in photo editing to remove a text watermark from a picture. The watermark is located on the entire screen, interspersed across the image. It's essential to me that the final photo maintains its original quality. Key Job Requirements: - Excellent skills in photo editing and watermark removal - Proven experience with ensuring high image quality post-edit - Attention to detail in maintaining original photo elements and aesthetics Please include examples of previous watermark removal work in your proposal.

Looking to substantially increase the traffic to my website on Google. My site predominantly houses product listings, therefore relevant experience in optimizing product-focused websites is a must. Ideal bidding candidates should have: - Expertise in SEO strategies - Proven record of boosting Google search results - Knowledge of optimizing product listings for search engines - Experience working with similar websites is a big plus - Understanding of the latest Google algorithms and web trends The goal is to increase traffic from people specifically searching for my products in a geographical area and also engage effectively with the new visitors. Also to direct traffic when searches are made for co...

I am seeking a skilled photographer who can capture outdoor lifestyle images of our tech gadgets for e-commerce use. Key Requirements: - The photos must portray the products in an outdoor setting. Your creative input in choosing suitable outdoor environments is welcomed. - All shots should be product-focused to underscore the real-life application and usability of the gadgets. - Previous experience in tech product photography is a plus, more so if you've worked with outdoor settings. Potential collaborators with a portfolio that demonstrates their grasp on both tech-oriented and outdoor photography are of keen interest. Your creative eye, attention to detail, and technical proficiency will be critical to delivering high...

I am i...an optics design expert who can develop a design for a projector. You will: - Design optics for a straight through projection system - Ensure the projected image can be adjusted from being 0.1 times to 0.02 times smaller than the original image size. - Utilize plastic as the medium for any optical system components - Implement the design to function efficiently with a collimated UV light source Your skills and experience: - Familiarity with various optical systems such as refractive, reflective, and catadioptric systems - Previous experience designing optics for projection devices - Proficiency in light source implementation, preferably UV sources - Knowledge in working with plastic components in an opti...

I'm...blueprint creation specifically for residential homes. The purpose of these trusses drawings/blueprints is for a building permit application. The crucial aspect for this work is calculating the snow load that the roof can bear. This is a vital part of the project as it will ensure the safety and durability of the structure. Potential freelancers should have: - Experience in residential construction - Expertise in truss drawings/blueprints - Proficiency in understanding and applying the Local Building Code in calculations - Solid knowledge and skills in performing snow load calculations For the proposal to be considered, please include examples of similar projects you've completed and any relevant certifications you m...

I'm looking for a skilled web designer to create an e-commerce website for my physical products. The site should include several essential features to ensure a seamless shopping experience for customers and efficient management for me. Key features that are essential for this project: - Shopping Cart: The website should have a user-friendly shopping cart for easy selection and purchase of products. - Product Reviews: An important aspect of the site will be the ability for customers to leave reviews on the products they've purchased. - Payment Gateway Integration: The site needs to be able to process payments securely and seamlessly. The ideal candidate should have exp...

...seeking a talented freelancer who can help me craft a compelling CV for a Healthcare Assistant position at the UK NHS. Despite having a Bachelor's degree, my lack of direct experience in healthcare is a challenge I hope to overcome by showcasing my volunteer work in the sector. Key Points: - No professional healthcare experience: While I do have a Bachelor's degree, I lack direct experience in the healthcare sector. The ideal CV will need to creatively highlight my transferable skills and demonstrate my passion for and experience in healthcare-related volunteer work. - Emphasis on volunteer work: The main focus of this CV will be on my volunteer experiences. I need the freelancer to bring out the key...

...of a voiceover specialist for a series of basic instructional quicktime videos. - The ideal candidate will be a native English speaker with an American accent. - The tone of the voice should be friendly and conversational. - The target audience for these videos is adults, so the voice should be clear and engaging. - This will be for a series of instructional videos for a website/app. Each video is 3 to 10 minutes long. Important: I will provide a quicktime video tutorial with voice instructions. The voice is mine and it's very bad. I need someone to watch and listen to my video and replace my voice with a professional voice. The output will be a new quicktime video wi...

I need an experienced professional who can enhance my Amazon sales strategy. I'm using Sponsored Products Ads and need a focus on increasing sales. Key Requirements: - Amazon Ads expertise specifically in Sponsored Products Ads. - Proven track record in increasing sales through these type of ads. - Capable of focusing on specific products and optimizing their visibility. With your help, I hope to drive more traffic to my listing and improve the visibility of my specific products. Experience with successful Sponsored Product Ad campaigns is crucial. Let's propel my products to the forefront of Amazon sales.

...seeking a skilled WordPress developer to enhance my product page by changing its layout and adding custom fields. Your primary task would be to import a CSV file containing a variety of product data. I have created the attributes I need but the CSV importer is not pairing my CSV attributes with the woocommerce attributes. Key requirements include: - Changing the layout: I need the layout of my product page to be similar to the attached Product Page Sample. What I have been unable to do is get my product attributes to list in 2 columns. - Adding custom fields: Introduce new fields for product data that is not currently displayed in the default layout. I have added the necess...

I'm in need of a professional photographer who can capture the most special moments during my proposal. This will be a small event and I require 2 hours of coverage. The photography session will take place in both indoor and outdoor locations. Key requirements include: - Experience in capturing intimate and emotional moments - Ability to work with natural light and various indoor settings - Proficient in editing the photos to achieve a high-quality finish Please provide a portfolio that includes similar work you have done, especially in proposal or wedding scenarios. Your portfolio should demonstrate your ability to capture the emotions and essence of the moment, and should showcase your skills in both indoor and outdoo...

I need a modern and sleek logo for my business 'The Charleston'. We are a luxury apartment rental company, so the logo should reflect our high-end and upscale positioning. Key aspects of the project: - The logo should be clean and contemporary, following a modern but classic design theme. - The ideal freelancer will have experience in creating logos for luxury brands or companies. Please include your past logo design work in your proposal. I'm excited to see your creative ideas!

I need a modern and sleek logo for my business 'The Charleston'. We are a luxury apartment rental company, so the logo should reflect our high-end and upscale positioning. Key aspects of the project: - The logo should be clean and contemporary, following a modern but classic design theme. - The ideal freelancer will have experience in creating logos for luxury brands or companies. Please include your past logo design work in your proposal. I'm excited to see your creative ideas!

As an ecommerce business, we are venturing into reselling high-end beauty and herbal ... - Products: Our focus is on both beauty and herbal products from elite brands only. This will translate to offering products that are renowned for their superior quality and results. - Target Audience: We aim to cater to a diverse market that includes both men and women. This broad approach will necessitate freelancers who have experience in marketing and selling to a diverse audience. We require freelancers with: Join us as a selling partner and earn 10-12% commission on the retail price of our beauty and herbal products. Be a part of promoting natural wellness and beauty while earning great commissions This project pres...

...seeking an experienced WordPress expert to create an E-commerce website for selling resume/career services. I have pre-prepared snapshots and an existing website structure I want to keep but am open to input/design modifications. I want the website completed and then transferred to me so I can customize and publish when ready. The website should be tailored to selling different types of services in an appealing and efficient way. Key Elements: - The design should incorporate snapshots provided. The overall aesthetic should be professional and captivating to potential customers. Ideal Skills and Experience: - Experience in WordPress and WooCommerce - Proficiency in e-commerce website design, particularly for serv...

...launched a new consumer product and am looking for an experienced freelancer to help with sales. The target market is primarily consumers. The sales strategy will focus on social media so I need someone with proven expertise in this area. The main tasks include: - Designing and creating engaging product videos - Collating and showcasing customer testimonials - Developing tutorial guides to help with product understanding Key Skills & Experience: - Proven track record in driving consumer product sales - Proficiency in creating engaging social media content including videos - Experience in managing customer feedback and testimonials - Understanding of SEO and social media algorithms to enhance the visibility of sales con...

I'm in search of a graphic designer who can comprehend my requirements accurately and devote full attention to designing a logo that enhances my brand with their creativity. Key Requirements: 1. Bullseye Circle -The logo must include a circle similar to a bullseye, representing the core of the brand. 2. Interior Design Element - Incorporate a design element related to interior design to highlight the brand's focus. 3. Emotional Appeal - The logo should evoke the right feelings and effectively convey the brand's mission. 4. Premium Creativity - Design a logo that exudes premium quality and creativity, ensuring it stands out. 5. Premium Color Scheme - Use a color scheme that reflects premium quality ...

...need of a skilled and experienced web developer to create an e-commerce website for my business. The site will be dedicated to selling physical products, so it's crucial that it's tailored to this purpose. Key Features: - Shopping Cart: The website should include a reliable and user-friendly shopping cart system. - Product Customization: It's important to allow customers to customize some of the products they purchase. The website should provide an interface for this. - Customer Reviews: The site must have a section where customers can leave reviews. This is crucial for building trust and credibility. Ideal Skills and Experience: - Proven experience in e-commerce website devel...

I am looking to have a web app built, complete with user registration and login, A user profile, a way for consumers to pay and their own user profile also to track their payments and commenting features. Yet, we need to go beyond the basics: - Implementation of user-profiles and preferences, allowing for a personalized user interface. - Payment gateway integration, facilitating smooth and secure transactions. - Order tracking feature, keeping both the business and the client aware of the order status at all times. The primary audience for this web app is individuals and businesses searching for a comprehensive drip feed membership platform. Therefore, experience in e-commerce and membership solut...

...embarked on a fantastic journey with an Etsy business, specializing in print-at-home and print on demand products. Now, I'm aiming to increase my brand's reach beyond Etsy, which is where you fit in. Crucially, I'm seeking a seasoned expert to leverage various social media platforms and extend my brand presence. Unfortunately, I've not yet established a social media presence hence your first task will be recommending the best platforms to engage with my audience and create an effective strategy. In your role, the focus will be on: * Recommending suitable social media platforms * Building and executing a comprehensive social media strategy * Creating engaging content- with a strong preference for pr...

I need a talented and experienced writer to create a comprehensive yet straightforward book on radiology. The main theme of the book is radiology, and it is focused on the basic principles and concepts of the field. Key requirements: - The book should be written in a way that is accessible and engaging for radiology professionals. - It must cover the fundamental principles and concepts of radiology in a clear and concise manner. - The ideal candidate would have a background in medicine, particularly radiology, and experience in medical writing. The book should be well-researched and provide a solid introduction to radiology for professionals in the field. If you have specific experience in this area, please let me ...

I'm seeking app testers who can help with a crucial aspect of my project - Usability Testing. The app needs to be tested on both iOS and Android devices to ensure it's user-friendly and intuitive. Key Requirements: - Proficiency in testing mobile applications on both iOS and Android devices. - Extensive experience in usability testing. - Ability to provide detailed, constructive feedback. - Experience in posting detailed reports on the usability of an app. -The app is a free social media platform designed for property owners or investors. To participate in the testing process, candidates should either own properties themselves or obtain approval from property vendors. -Testers can sign up for the app using usernames ...

...analyze the performance of products within an online retail dataset to uncover insights that can inform strategic business decisions. Leveraging transactional data, including sales revenue, profit margins, and customer reviews, you will conduct a comprehensive analysis to understand the dynamics of product performance over time and across different categories. Through descriptive analysis and visualization techniques, you will identify top-selling products, trends in sales revenue, and correlations between performance metrics. Additionally, you will delve into customer feedback to gauge product satisfaction and uncover areas for improvement. By providing actionable recommendations based on our analysis, you aim to optimize ...

I'm looking for a skilled professional who can enhance my agency's online presence. Specifically, I need someone who can manage my Facebook, Instagram and Twitter accounts. This person will also be responsible for running paid ad campaigns on these platforms. The pay will be project-based, to be agreed upon before each campaign. Key Responsibilities: - Managing and optimizing SEO for my agency's website to increase traffic - Creating and implementing social media strategies to generate leads - Enhancing brand awareness through engaging and valuable social media content - Running targeted ad campaigns on Facebook, Instagram and Twitter Target Audience: - My agency caters to both B2B and B2C clients, so the specialist s...

I'm in need of a skilled photographer to assist with a project that involves capturing nature images. The aim is to use the photographs for commercial purposes. Key requirements: - You should have a strong portfolio that showcases your skills specifically in nature photography. - Experience in commercial photography is a definite plus. - Proficiency in outdoor photography and working in various outdoor locations is essential. - The final output should be high-quality, professional images that are suitable for commercial use. Please include in your proposal: - Your relevant experience and skills - Examples of your previous work, especially related to nature and commercial photography - A rough timeline ...

...of a skilled programmer who has proven experience in web scraping. You will be tasked with scraping three specific pages that I will designate while ensuring all text content, images, and links are accurately replicated. Ideal Skills: - Hands-on experience in website scraping - Ability to work swiftly and efficiently - Strong attention to detail Note: It's an urgent project, so availability to start immediately is a must. It would be more credible if you can supply relevant examples of your past work. Your proposal should clearly state the following: - Your experience in similar tasks - Your proposed strategy or plan to complete this project - Any challenges you anticipate and how you plan to navigate them Please k...

I'm looking for someone with a solid understanding of the market and strong research skills to help identify multi-brand women's clothing retailers in the UK and USA. The project involves finding both online and physical retailers that also have an online presence. The ideal candidate will have experience in market research, preferably within the fashion or clothing industry, and possess excellent analytical skills. Knowledge of the retail sector is crucial, and having access to premium market research tools would be a plus. Please include details of your experience and your research approach in your proposal. Note that we will provide an Excel sheet for the data, and we are offering $50 for every 1000 records. Please appl...

**Project Description:** I am looking for a highly skilled data scientist with deep expertise in AI, specifically in using OpenAI GPT models, Azure Open AI, and Google Gemini API. The successful candidate will be responsible for developing specialized models to enhance the processes through advanced AI technologies. **Responsibilities:** - Develop and optimize AI models tailored to specific use cases. - Integrate and manage API interactions between OpenAI, Azure, and Google Gemini platforms. - Monitor and adjust models based on performance metrics to ensure optimal functionality. -Ensure seamless integration and deployment of AI models. **Required Skills:** - Strong expertise in AI, specifically with OpenAI GPT models, Azure Open AI, ...

I am on the hunt for a confident seller with a flair for driving sales and fostering client relationships. I require someone with: - Expertise in selling a variety of beauty and health care products, primarily in skin care, hair care and dietary supplements. - At least one year of experience in sales and client relationship management. - The knack for not just implementing, but also developing effective sales strategies. The ideal candidate for this role is dynamic, target-driven and should have a keen eye for details. Excellent communication and negotiation skills are a must for this role.

...and informative product descriptions? I am in need of your services for my e-commerce store that specialises in bedroom furniture. The project involves writing compelling and detailed product descriptions aimed at both adults and children. Your write-ups should be clear, engaging, and informative, capturing the quality, features, and benefits of each furniture item. Highlight any notable functionalities that make these products stand apart. Your descriptions should maintain a tone that is both fun, friendly and informative. This isn't just about stating the facts; your work should also appeal to the reader's imagination, helping them visualise just how fantastic our products would look in their homes and how much they...

I'm seeking a seasoned mobile app developer with a strong background in e-commerce app development for both iOS and Android platforms. The key features of this application includes: - Product Search and Online Ordering: Users must be able to search for products and place their orders directly within the app. - Payment Integration: The app should feature Google Pay as the payment gateway for a seamless and secure transactions. Ideal candidates should have previous experience in e-commerce mobile applications, knowledge of various payment gateways especially Google Pay, and expertise in implementing search and order functionalities. Demonstrated proficiency in programming languages suitable for both iOS and Android platfor...