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Web & Mobile app (offline functionality, cross platform, data synchronization)


- The project consists of two parts: a responsive website (web app) and a related iOS app displaying this web app (like a browser).

- The app must work both online and offline (caching scripts, pictures, database). All online features must also be available offline and then synchronize automatically once the device is online again. Users must be able to write, modify and hide database entries offline.

- only functionality for this version: The administrator can create user accounts, users can log in and see their user data.

- When a user logs in the first time, the device caches all necessary data. The user must then be able to log in offline any time

- integration of a module system for modules like logs, users, clients. The first module is the users administration.

Web app:

- Modular system with authorization groups for user rights management

- No offline functionality needed

- Each functionality is handled in a module

- Users belong to authorization groups. These groups determine which modules the user can see and/or edit.

- Bases on Bootstrap framework (already available)

- Responsive web design (already available)

- Usable via mobile app or via browser (already available)

- strings are saved in tokens so that multi-language is possible

Mobile app (iOS):

- Works basically like a browser that displays the web app

- Feel free to use this basally App ([url removed, login to view]) (already available)

- Saves data that is entered offline and the synchs the data once the device is online again

Frequently Asked Questions

Which browsers must be supported by the web app?

Chrome, Firefox, Safari, Internet Explorer

Which devices must be supported by the cross platform app?

iPhone (3GS, 4, 4S, 5), all iPads. Android comes later.

Is responsive web design already being used?


Is the system multi-language?

Yes, all texts must be available as tokens that can be translated in any language.

Which database system must be used?

MySQL or SQLight. Other systems are open for discussion.

Which framework is being used?

Bootstrap ([url removed, login to view])

Is there already a layout?

Yes, [url removed, login to view]

Are there separate layouts for the web app and the native app?

No, the layout adaprs automatically to the screen size.

Which CMS is being used for managing the web app's functionality?

None yet. The CMS should be custom-made and be part of your bid.

Should users be able to zoom on the mobile app?

No, users are not able to zoom.

Once the user is online, the app and the server will synchronize their data?


So users can enter various information offline in the native app or the web app. These information are saved offline and once there is an internet connection, the data will be synchronized with the database?


Should the synch take place during certain events, time intervals etc?

The synch will take place once an internet connection has been established. However, it may make sense to start the synchronization only after some seconds.

Which data can be entered?

This depends on the module. In this first version, the user can enter these data: User name, name, surname, employee number, avatar (image), email address, password.

Are there additional external systems that access the database?

Apapart from the database administration tool (PHPMyAdmin), no.

Kỹ năng: Android, iPad, iPhone, Javascript, Kiến trúc phần mềm

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Về Bên Thuê:
( 3 nhận xét ) Berlin, Germany

Mã Dự Án: #4541525

24 freelancer đang chào giá trung bình $1421 cho công việc này


Hello, Please refer your Inbox. Thank you!

$2577 USD trong 25 ngày
(50 Đánh Giá)

Hello, I`m serious bidder. Please see PMB. Thank you!

$2577 USD trong 20 ngày
(1 Đánh Giá)

Please kindly check your PMB. Thanks.

$1237 USD trong 20 ngày
(4 Đánh Giá)

I have done many apps and this is cross platformed right ? Thanks for inviting me but this requirement is not clear . Pls check PMB

$999 USD trong 30 ngày
(7 Đánh Giá)

Hi, Please check private message. Thanks

$3092 USD trong 45 ngày
(31 Đánh Giá)

Hi we are interested.kindly see your pmb.Thanks Rashid

$1546 USD trong 30 ngày
(8 Đánh Giá)

Hello, Thanks for posting the project on Freelancer, the project requirements completely falls under our domain and where this project exactly matches with our technical strengths and our abilities to deliver the wo Thêm

$1443 USD trong 35 ngày
(1 Đánh Giá)

hello thanks for the invite we can definitely build the corss platform app as per your description within 30-35 working days once the UI is approved please review our completed apps sent to you via pmb and let me k Thêm

$1368 USD trong 30 ngày
(3 Đánh Giá)

Dear Sir/Madam, We would like to do your project as per your needs and requirements. We have a expert professionals to complete your project within a specified time.Please check your PMB for further details.

$1052 USD trong 30 ngày
(0 Đánh Giá)

Expertise in Mobile Application Development. I can start the Project immediately. Please check PM. Waiting for your reply..

$773 USD trong 18 ngày
(1 Đánh Giá)

Hello, We give you a best and fair solution for this project as "Papillonsoft" working on the basis of hundred percent quality and satisfaction measures. Thanks. Snk

$1030 USD trong 25 ngày
(1 Đánh Giá)

Kia ora! On2itonline.com are a NZ based web and software design company who have seen you here on the freelance market and are really excited about working with you and treating you to the full service, professional ex Thêm

$659 USD trong 10 ngày
(5 Đánh Giá)

It's an easy task for us.We have gone through your requirements and we are ready to start the work immediately on your project. We will send you the complete list of company's projects and portfolio once you reply us b Thêm

$1111 USD trong 25 ngày
(0 Đánh Giá)

Respected Client, Please check PMB for listing and confident to complete the project with quality services.. Best Regards

$773 USD trong 10 ngày
(1 Đánh Giá)

Client satisfaction with good service is our policy. Timely work delivery with quality and within the promised budget is our priority. We would be happy to help you with any query or questions; our support team is ava Thêm

$1030 USD trong 20 ngày
(0 Đánh Giá)

I did a lot of projects like this ,check pm.

$360 USD trong 14 ngày
(5 Đánh Giá)

Hello, We are leading IT Services Company from India. We deals in a mobile and web app developments. We strongly believe in a customer's satisfaction and fulfill their requirements. Please check PM for ultimate solut Thêm

$1368 USD trong 28 ngày
(15 Đánh Giá)

We provide you industry standard Mobile Apps, Software, Desktop Apps, Web Stores, Websites and Web Apps. So, you get all at one place! We can provide you the following: - iOS applications - Android applications - Thêm

$309 USD trong 8 ngày
(1 Đánh Giá)

We have a good team and i have lots of clients from Germany we can surely do this work

$2577 USD trong 20 ngày
(4 Đánh Giá)

Please check PM for detailed information.

$1157 USD trong 30 ngày
(2 Đánh Giá)