Create a Time Monitoring Web App or iOS native App (using API)

Dear Freelancers, We are searching for a professional developer who can create a Web App or iOS native app based on the flow chart we created. The GUI design has already been fixed (see attachments). Also it’s important to say that the Date / Time Picker has to be iOS look alike also for the web app (see attachments). But has to be recreated for the web app using CSS or redesigned for the native app. From a user point of view that app has to do following: Supporter leaves the office, drives to client a, as soon as he is there he opens up the web app or native app, selects client xyz, and service xyz and starts the stop watch. Then he does some software upgrades or whatever at the client xyz. As soon as he is finished and leaves. He opens up the web app again and stops the stop watch for client xyz. It’s all shown step by step on the flow chart which is attached. Please read this all carefully and also check the flow chart carefully. If you have any questions about the API check https://docs.easysys.ch. If you are sure how much time and money it will take please make an offer for the web app or the iOS native app. For any questions please just send me a message Best Yves