Make a simple interface showing balance on top and withdraw button at center. No login required.
Balance should increase per second since user opens app for first time from 0.00000000 BTC to +0.00000001BTC per second
You need to show that balance should be atleast 0.50000000BTC to withdraw as notification.
Then, user can enter BTC address and show notification that withdrawal will be processed shortly. I do not want to save any data. Just to be shown as pending withdrawal after 0.5 BTC
I can develop the application as requested Having experience of above 5 years in android app development