Hi there
It requires stripe account who is gonna receive the payment from the user of the app and it needs one custom API ? So do you have both of it?
If you do not have a good idea then get some clarity and then come
I will share the app as a new app then you can also copy that code into your app as needed so if you are not clear about your app's need then I am not responsible
Because I had bad experience in stripe implementation in to one existing app who does not know about it fully and came back with lot trouble to me