Hey,
Note sure if you've seen, but we've been making quite a few improvements to "old.piefed", you can see a deployed version on https://old.piefed.zip
It's getting really close to feature parity (I added yesterday emoji reactions, title fetching and usernames and communities autocompletion) with the default Piefed UI, offering another option for people who want to give it a try on their phone. I do it myself, it works.
It's not the same as a full fledged app, but while I can get around web development, mobile is a completely different beast, and I'm also not sure how happy mobile app devs are with external contributions, especially created using Claude.