I didn't try the app yet. If you are trying to get people involved, which don't know much about the technicalities of Bitcoin (or other cryptos) but want some, you could provide an easy way to buy them, through traditional channels.
Nice you can set up the contacts binded with each respective cripto addresses.
I am making an API too, so if someone ones to develop an extra feature or use it on their website they can connect to our public API, and I am planning to add support for multiple crypto addresses, means I can have n bitcoin addresses, one for public, maybe next one for my blog on my website, and you are going to be able to set automated withdraws to a specific address. You can say if my website BTC address reached a specific amount than send it automatically to my other BTC address.
But first thing to do, is fix already existing bugs.