Yep those are the two I use!
TrustingZebra
The word instance is fine, and makes sense if you think about it for five seconds.
Photos is cool but weirdly much lower than every other gallery app.
There are so many different "privacy browsers" for Android, that it can be hard to keep track of them. FFUpdater is the one place I can find all of the good browsers, as well as information about each (including Warnings on why you may not want to use them).
The feature that Liftoff has is automatic redirects. So for example if I am lemmy.one user and want to subscribe to [email protected], clicking the Subscribe button on the Liftoff app will offer to redirect me to lemmy.one/c/[email protected]. On the web interface, you would have to manually go to that domain.
Also all the links in my comment automatically open in the Liftoff app.
At least on Liftoff it's incredibly easy.
Better than OsmAnd?
That name is guaranteed to get you kicked.
Kindle devices are nice but not at all FOSS, and not very open either. Although you can sideload books, EPUB files are still not directly supported, you have to convert them. Converting is easy with Calibre but it's still a hassle that is not needed on any other ereader.
There's a vibrant jailbreak community on MobileRead, however Amazon keeps blocking jailbreaks.
After my Kindle died I got a Kobo instead. Costs about the same as Kindle (maybe slightly more?). Still not fully open, but supports EPUB and its MobileRead community is just as vibrant (and Kobo doesn't block you from doing this).
There are many ereaders than run Android.
It's so nice to be excited about my OS again. I remember as a kid, I used to be really excited about Windows updates. People were cynical about Microsoft even back then, but I remained loyal to Windows for years.
Only last year did I finally move to Linux as my OS (although I still use Windows for gaming). Since then every following Linux news is always exciting. New versions of distros, desktop environments and software always bring interesting improvements.
Meanwhile on the Windows side, most noticeable updates just bring more ads, tracking, forced Edge recommendations and forced logins. Ironically the last Windows feature I remember being genuinely excited for was WSL 2.