You're right! I'm glad you asked! :)
Search: Please fix the search. I already mentioned it but haven't had time to document it yet.
If you first search for a user and then try to find a post from that user's feed, the search button is disabled or does not work. I'm guessing that's not intentional, because if you go back to your feed and then to the search page, the suggested user is preselected as the author.
2) Can u change the UX when switching between the "People" and "Notes" search functions? Maybe something like two search fields: when you tap the desired search field, it expands, and the other search field turns into a button, so you can switch between the two using the text you've already entered. I've never seen anything like that before, but it would be cool if you want to keep the two search options.
3) Please, please, please reset the search after leaving the view. Every time I'm looking for something new, I have to delete the old search.
4) Notification: In addition to the existing notification categories like "All," "Replies," and "Reactions," could you add an "Aggregated" category that combines multiple notifications into a single entry? For example, "Alice, Bob, and Mallory have zapped Note x."
5) The last point is more or less optional. But would it be possible to preload a little more of the feed? The app is already pretty fast, but every now and then I see empty profile pictures.
Anyways, these are just a few suggestions .. or let's say wishes. Great work so far!