Since you seem to have done the research, can you link some other iOS or Android apps that have been allowed to solicit donations for the Open Source Collective? Thanks.

I mean, come on. Just read their page. They're not a charity, at all. They're a "fiscal host" (which is a weird term right out of the gate) designed to solicit donations on behalf of other projects. They're literally a payment processor in competition with Google and Apple, and taking a cut of their own.

I mean, fine. They can do that. But that's not charity.