Mobile development

I need an Android app. I would like it designed and built. I’m also after an app mobile app developer that can develope an Android / iPhone app that allows users to send a tip for a beat that they like in crypto So the app basically display a list of beats from a web service. The user can Play/ download a beats / send to email address. They can play the beat for free however should they like the beat we should be able to accept crypto currency as a tip or. Exchange for th download. App would be for Android / Apple platform Here is like a reference samples related to what I need but not related enough because the crypto [login to view URL] part for the beat would be included... Instrumental Beats 2 by chris ogunsalu [login to view URL] I would assume you would use a service that allows us to accept crypto such as bitcoin, litecoin. I think Coinbase, shapeshifter,bitpay May have service or do you no of others? Or do you have any app like this I can buy from you hosted by you?...i would be more considerate with you if you can sell me an already made app like this.