Build android app similar to this : https://play.google.com/store/apps/details?id=com.razrcorp.scarlett&hl=en_IN

I want to build app similar to this: [login to view URL] But it should be available for multiple content creators instead of only 1. [login to view URL] 100 creators It should be properly integrated with payment gateway. UI should be really good with seamless navigation. There shouldn't be any issues with font, image adjustments,etc as there are plenty in above mentioned app. UI should be more refined and clean. FYI: I am just an individual. Not a corporation or a startup. I am looking for cost effective yet impactful solution. If project doesn't fall under your expected budget, please do not make any bid. I genuinely want quality app within my projected budget. I want to build only android app at the moment. But in future if product is really good, I would award project for ios and web interface to same vendor. Only genuine makers post your bids. If required, please install and go through features available in above app. Only then post your queries related with the app.