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iExchange is a web app that allows users to see current and historical exchange rates for different currencies. Users can set up an alert threshold, when the exchange rate crosses crosses that threshold, they are notified. Requirements: - Display the latest available exchange rates using a free public exchange rate API. - The app should also show the data source and the last updated time. - User are notified when exchange rate passes chosen threshold. - The user can set an upper threshold or a lower threshold for the selected currency pair. - If the current exchange rate is greater than or equal to the upper threshold, the app should show an alert. If the current exchange rate is less than or equal to the lower threshold, the app should show an alert. - The selected currency pair and threshold values should be saved in browser [login to view URL] refreshing the page, the saved settings should still be available. - Allow users to select currency pairs. For example NZD/USD. - Display historical exchange rate graph such as weeks, months or years. - Responsive design for desktop/mobile browsers Deliverables - Source code - Working web application - Installation instructions - README documentation - If generative AI tools were used, please clearly disclose: - which tools were used - key prompts or examples of prompts used, and - how the AI-generated outputs were reviewed, modified, or incorporated into the final deliverable. Technical Preferences - Simple frontend framework acceptable - The application may use: - [login to view URL] (or similar library) for visualising exchange rate trends - Browser localStorage for storing user preferences (e.g. threshold values) - Direct integration with a public exchange rate API - No login/account system required - No database required Expected user flow: - The user opens the web application on desktop or mobile. - The user selects a currency pair such as NZD/USD. - Application displays the current live exchange rate. - User can view historical exchange rate graphs across different time ranges(week/month/year) - Users set upper or lower exchange rate thresholds. - Browser notification or alert is shown when the selected threshold is reached. Attached is an example of what the site should look like. A simple, compact design where everything is in reach.
Project ID: 40456568
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The localStorage threshold persistence and refresh handling is straightforward but the real trick is polling the exchange rate API without hitting rate limits while keeping alerts responsive. I'd use [login to view URL] for the historical graphs, fetch from something like exchangerate-api or fixer for live rates, and build the whole thing in vanilla JS with localStorage for settings. Built a similar AI Travel Planner with real-time data syncing at ffulb.com. Can start whenever works.
$65 NZD in 5 days
4.3
4.3
88 freelancers are bidding on average $92 NZD for this job

Building a real-time exchange rate tracker with threshold alerts and historical charting is right in my wheelhouse — I've built similar financial dashboards using React and REST APIs. For iExchange, I'll integrate a free API like ExchangeRate-API or Frankfurter to fetch live and historical rates, display the data source and last-updated timestamp, and render interactive charts with Recharts so users can toggle between weekly, monthly, and yearly views. Threshold alerts will be managed client-side with localStorage persistence, ensuring settings survive page refreshes. The UI will be fully responsive using Tailwind CSS. I can start immediately and will provide clean source code, a working deployment, a detailed README, and full AI-tool disclosure as requested.
$50 NZD in 1 day
6.7
6.7

⭐⭐⭐⭐⭐ + 100% Job Score freelancer Hi Client, thank you for this change to apply for your project. Yeah, it is so easy for me and I already developed such platform before, I scaped real time rate of each currency pair like USD/VND from the several brokerage using apis like IBKR apis, and then display into the web dashboard with chat.js. Also can notify to your chatting app when that currency pair is over the specific amount. If you align this project to me, I will deliver high quality and good result in a short time. Lets talk in detail. Vinh
$100 NZD in 7 days
6.3
6.3

Hello, I came across your Interactive Exchange Rate Tracking App and I am very interested in working with you. I have reviewed your requirements and full understand the scope of expectations. I specialize in CSS, HTML, Web Development, Web Design, and have successfully delivered similar projects before. I am committed to delivering high-quality work with reliability, clarity and professionalism. I work transparently throughout the project progress, deadlines and expectation stay clear at every stage. I would be glad to disucss further details and am ready to start immediately. Looking forward to hearing from you. Regards. Anum
$140 NZD in 1 day
5.8
5.8

With my expertise in PHP, Node.js, Vue.js, and C#, I am confident in delivering a high-quality and responsive web app that meets all your requirements for iExchange. I have ample experience working with APIs, integrating public exchange rate data, and graphing detailed visualizations with libraries like Chart.js. With a focus on leveraging the browser's localStorage capabilities, any user-selected thresholds will persist even after refreshing the page. Additionally, I can ensure your application remains compact yet intuitive like the attachment you provided. Efficiently interpreting complex datasets is crucial for any finance-related application. As a full-stack developer proficient in both frontend and backend technologies, I'm well-versed in handling such calculation-heavy task. Even though no login/account system or backend database is required for iExchange, my familiarity with C# can effectively secure any future implementation of such features if necessary. Trust me to provide a user-friendly and scalable web application that modernizes currency exchange tracking for the better!
$80 NZD in 1 day
4.9
4.9

Being a seasoned web developer with over a decade of experience, I believe I bring the right mix of skills and expertise to tackle your iExchange app. My strength lies in delivering clean, modern, and user-focused designs perfectly aligned with your project brief. I am highly proficient in CSS, HTML, JavaScript, Web Development tools which adequately meet your project requirements. Additionally, my forte in 'UI/UX Design' ensures that the resultant product is intuitive and responsive across all devices. My journey so far encompasses over 100 successful projects including the domains of not just web development but also WordPress Development (Themes, Plugins), Full-Stack Development (HTML, CSS, JavaScript, PHP), UI/UX Design and SEO optimization. This varied exposure coupled with my knack for emerging trends makes me a suitable partner for projects like yours which demand comprehensive technical acumen. Lastly and importantly,I always commit to on-time delivery with transparent communication. With my continuous support and revision process included in the package,I assure you will always remain updated throughout the development cycle while having our Adobe-like connection where every need finds a solution .Looking forward to building something amazing together!
$75 NZD in 7 days
5.0
5.0

Hello, We will build your iExchange app: currency pair selector, live rates display, threshold alerts with localStorage persistence, and historical charts via Chart.js. For the alert system, we will poll the API at a set interval and compare against saved thresholds. This keeps notifications accurate even after a page refresh. A couple of quick things to confirm: 1) Which free API do you prefer (ExchangeRate-API, Open Exchange Rates)? 2) Should alerts use browser notifications or in-app banners? The number quoted here is a starting estimate. The exact cost and timeline will be confirmed after we go through the full scope together. Looking forward to your response. Best regards, Faizan
$90 NZD in 5 days
5.2
5.2

Hi, I’ve built automation systems that integrate real-time data from various sources and trigger alerts based on specific conditions. For your iExchange app, I can implement the live exchange rate display, set thresholds for notifications, and save user preferences using localStorage. We can start with a small test to ensure the alert system works as expected before moving on to the full project. Best Regards, Ivica
$75 NZD in 7 days
4.0
4.0

Dear iExchange Team, To create a top-tier web app, I propose a structured approach to achieve smooth communication and precise results. I can initiate promptly, ensuring a seamless handover. Even if you choose another provider, I guarantee valuable insights. What is your highest priority among the extensive feature list provided? Kind regards, Melissa Pringle
$50 NZD in 7 days
3.6
3.6

Hi there, You’re absolutely in the RIGHT PLACE. I’ve delivered SIMILAR PROJECTS multiple times and know EXACTLY how to execute this efficiently and correctly from day one. To lock down the SCOPE, TIMELINE, AND PRICING, I’ll need to ask you a few key questions. Unfortunately, Freelancer’s 1500 CHARACTER LIMIT doesn’t allow me to break everything down properly here. Let’s jump on CHAT so I can show you my PROVEN PAST WORK, walk you through the REAL RESULTS I’ve delivered, and outline a CLEAR ACTION PLAN for your project. You’ll immediately see why my approach is DIFFERENT and EFFECTIVE. If you’re serious about getting this done RIGHT, I’m ready to move forward. Looking forward to CONNECTING and WINNING TOGETHER. Cheers, Royal IT service
$75 NZD in 7 days
3.7
3.7

As a seasoned Full Stack Developer with over a decade of experience, I've established myself as a reliable and business-driven engineer capable of building the high-performance digital systems that power modern businesses. My skillset aligns perfectly with your requirements for this project, including my profound expertise in Frontend Development working with HTML, JavaScript, Web Design, and Web Development. These will be essential in creating the simple and compact design you are looking for. One key aspect of my work that distinguishes me from others is my ability to engineer production-ready systems rather than just delivering basic development work. This means considering scalability, stability, and real business impact from start to finish. I will leverage this benefit to create a highly-responsive web application that will not only meet but exceed your tailored needs for tracking exchange rates. My previous projects have involved direct integration with APIs similar to those you require - so integrating the desired exchange data into the app will be seamless.
$50 NZD in 2 days
2.4
2.4

Hello! I can build iExchange as a clean, responsive web app that shows live and historical exchange rates using a free API, with interactive charts, threshold alerts, and localStorage saving. Users will get real-time alerts when upper or lower limits are hit, and all data will be clearly sourced and timestamped. The app will be fast, mobile-friendly, and easy to maintain. I’m ready to start and deliver a polished working solution quickly.
$50 NZD in 7 days
2.1
2.1

Hi, I've built several web apps that display real-time data and notify users based on set thresholds, such as stock market trackers. My project with n8n can be adapted to fit iExchange, where users can see current and historical exchange rates, set alerts, and view trend graphs. We could start with a small test task to ensure alignment before diving into the full project. Best regards, Rosmar
$75 NZD in 7 days
1.8
1.8

Hello, I have carefully reviewed the requirements for the Interactive Exchange Rate Tracking App project. I plan to develop a user-friendly web application that utilizes a free public exchange rate API to display current and historical exchange rates for various currencies. Users will have the ability to set alert thresholds for specific currency pairs and receive notifications when these thresholds are crossed. The app will also feature a responsive design for seamless usage on both desktop and mobile browsers. With my expertise in frontend development and experience in integrating APIs, I am confident in delivering a high-quality solution that meets your expectations. Please review my portfolio for examples of my previous work: https://www.freelancer.com/u/AMSSolutions I am excited about the opportunity to work on this project and ensure effective communication throughout. I look forward to hearing from you soon. Best regards, Asma M.
$75 NZD in 3 days
1.1
1.1

Hello, With over 12 years of experience in JavaScript, Web Development, and Web Design, I am confident in my ability to create a professional and interactive Exchange Rate Tracking App for you. I have carefully reviewed your project requirements and understand the need for displaying current and historical exchange rates, setting up alert thresholds, and providing a user-friendly experience. I will ensure effective communication throughout the project to deliver a responsive web application that meets all your specifications. I am excited about the opportunity to work on this project and look forward to hearing from you. Thanks
$75 NZD in 3 days
0.0
0.0

Lets chat, a free consultation and no obligation. I understand you need a clean, professional, and user-friendly solution for your "Interactive Exchange Rate Tracking App" project. My skills in PHP, Java, JavaScript are a perfect fit for this project. While I am new to freelancer.com, my extensive experience delivers integrated, automated solutions. Regards, Jason McLachlan
$86 NZD in 3 days
0.0
0.0

I have carefully reviewed the details of your iExchange app project, and I’m very pleased to inform you that I have already developed a web application that matches all the requirements you mentioned exactly. It is ready for immediate delivery, with only a few minor customizations if needed.
$75 NZD in 2 days
0.0
0.0

Hello, I can build this interactive exchange rate tracking web application with responsive design, live exchange rate APIs, alerts, historical charts, and local storage functionality. I have experience working with APIs, dashboards, data visualization, and responsive web applications using modern technologies. Features I will implement: Live exchange rates using public API Currency pair selection Upper/lower threshold alerts Historical exchange rate charts LocalStorage support Mobile & desktop responsive UI Clean code with README documentation I can start immediately and deliver a professional working solution within your timeline. Regards, Anmol Yadav
$65 NZD in 3 days
0.0
0.0

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