[hombre_fatal]

I don’t see the problem. The app is basically a generous demo lacking only creature comforts until you pay.

That’s better than every other pay scheme I can think of since you have the option to do without.

[tinus_hn]

I’m not complaining about a free/cheap app from a small developer but the guidelines say you’re not supposed to gate OS or hardware features behind in-app purchase, so it may lead to refusal at any time.