I think this is a brilliant idea for an app. It’s something that I didn’t know I wanted, but I do want. It once took me an hour to make one meme with my own tools. I know a couple of people who have made apps for iOS and I know that it is very hard so I’m proud of you for finishing your product and finding a way to monetize it without an initial subscription.
I know a couple of other people have mentioned that they don’t like giving their photos to Replicate, who does retain the user’s photos data. I appreciate you mentioning that you yourself nor your app harvests any data, which is great and seems to be written in good faith, but I do believe that having a short disclaimer in your app before creating the first post would afford the end user with a chance to make the decision for themselves if they want Replicate to harvest their photos or not. (Most people, will likely not care, like myself, but other users may have reservations.)
Some apps do a great job of presenting a disclaimer in a way that doesn’t frighten the end user but informs them in a short form sentence with a “learn more…” hyperlink near the bottom where the user can read in more detail about what replicate is and what the implications are from using your app. By implementing this, you are promoting transparency with a brief disclaimer that can either be quickly dismissed with an “ok” button or expanded with a “learn more…”.
I think you’re doing awesome brother don’t mistake me: I’m sincerely proud I know how hard it is. Just keep swimming you’re almost at the finish line.