Write an Android & IOS application

The project is about a mobile application working on android and IOS. It is in the sharing economy. The application will allows user sharing ressources, user will be then be able to book the resources, proceed with the payment, view the status of their different transactions, edit their profile, write message to each other, login, loggout, recorver their passwords, share the resource via social media, , invite new members via mails , via social medias , via sms, via what’s up, Reference applications are existing and the development will refer to them. An agile approach will be appreciated, Mockup Design, design, development functionality by functionality (scrum) . There are existing web version which will also be upgraded as part of another project in a later stage that is why this has to be only synchronized to the app via a database matching , it means the app has its own api, database and it will be synchronized with web version Further details can be given upon request. Thanks for the qualified bids. Usability Focus of app development shall be on usability. Each function shall be reachable with as few clicks as possible, without limiting overview. Suggestions of improvement shall be discussed with the client. Design Design shall be developed closely in accordance with design of Take it Abroad website. Graphics used on the website shall be adapted to the app. Maintainability and Documentation It is required of the contractor to thoroughly document all implementation and allow for easy maintenance and improving of the apps. Sources All sources have to be supplied to the client frequently (at least once every month) or access to the repository shall be granted. Supported OS Versions All smartphones and tablets have to be supported by the app starting with iOS-Version 7.0 and An-droid version 4.0. Smartphones All common iOS - and Android smartphones and tables have to be supported by the app.