Explanatory Video for iPhone/Android newly launched app

Hello Mohammed. I need your help in creating an animated explanatory video relative to a newly launched app in Apple/Android. The app contains qualified service providers in various fields where customer can sign up and upload a detailed description of the service needed. Once a service request is uploaded, providers will bid for the requested service and customer will be able to choose a bidder to complete the job. once the customer accepts a bid, an automatic contract will be generated to bind the provider to provide the service and the customer to pay the agreed amount upon completion of the job. The main benefit of the app is the convenient and the fact that all providers are qualified companies/business owners.