Android App in HTML5 - repost 2

Android App development in HTML5 Use for the coordination and finding the closer installer to the customer. The installer will pay a fee for belonging to the Platform and the customer will pay the installer using the smartphone ( we can use paypal or square ). We can use google maps & foursquare for location service and a social nerwork structure-type for the installers where we can rank them and add comments from the customers. Objective - clear / user friendly. Scalability is important.