Initial feedback from someone else on a Twitch cryptocurrency channel Discord:

Crypto bubbles is one I use till I can find a better one. It's not the best iv seen. But it didn't cost much ... like ... 2$ ?
Looks good , need to play with it some more.... would like to put more then 1 in a widget.... ... like.. a 5x5 but put maybe 3 or 4 different crypto in them instead of a 2x1 for each

So if you're thinking about monetization, maybe this feature could be an in-app purchase.