Here some not yet mentioned #FOSS #Android apps that I think add value to me:

• Anki-Droid (github) for spaced repetition learning, synced with the Anki desktop app. I create and manage cards in the desktop app, but a mobile client is convenient for review on the go. Makes memory a choice.
• AntennaPod for #podcasts
• #OSM: Organic Maps, and StreetComplete for easy contributing
• Wikipedia
• Orgzly outliner using the org-mode markup format of the #Emacs text editor. I use it to view and edit my org-mode notes created in the Emacs text editor on my phone. That use-case is pretty niche, but the app is also decent by itself.
• Syncthing for syncing directories between several devices (mobile & desktop) without the need for a central "cloud" server.
• Wallabag: Self-hosted pocket alternative. Save websites to read later and sync that list across devices.

Not on F-Droid:

• Medito (IzzyDroid, github): Guided #meditation for beginners and a FOSS alternative to headspace and the like. Though if you're experienced just a timer app might be sufficient, there are plenty of those. Might do some tracking, there seem to be some problems getting it into FDROID, see this issue

Great list - picked up a couple new ones for myself. Thanks.

Adding to your list:

• Paperless Mobile An almost fully-fledged mobile app for my Paperless-ngx server
• Syncthing Helped me (with Photoprism) replace Google Photos, but also syncs backup files made by other apps (Tasker, Signal, calls & texts, etc) from my phone to my computer overnight
• Simple Search Completely configurable search widget, lets me search with my private Whoogle servers from my phone's home screen
• Shelter A lot like Insular, lets you utilise work profile for your own needs - apps, files, etc.
• Droid-ify Another F-droid alternative

Lots of great recommendations and I got a few ideas from here. I came here to mention AFWall+, which blocks apps' internet connection with iptables for that additional layer of security.

I use Syncthing and KDE Connect both. They're fantastic at what they do- wireless sync specific folders between devices, send/receive files, share a clipboard between devices, remotely operate a device, share notifications etc. Basically you can create your own seamless ecosystem of devices that belong to any platform! If you're like me and use a lot of offline-only apps, these two will let you sync your data between 2 or more devices. I use it for my offline music library (fully legal of course, no question about it haha lol), logseq notes, books (again, definitely completely legal).

I also use BitWarden, but I might switch to Keypass because it is fully offline.

I'd love to share my recommended apps but I can't make a post.

Thanks, yours recommendation it's like my. It's seems that have "my phone". 😂😂😂

Some stuff that wasn't mentioned yet and should be on either fdroid or izzy:

• Muzei (wallpaper switcher)

• Earth view for Muzei

• Retro Music

• Simple Time Tracker (used to use it to track my work hours)

• Energize (most feature-packed food tracker on fdroid)

• GymRoutines (Workout tracker)

• Material Files (file manager + seeing network shares)

• Wireguard (allows me to connect to my local network and see my NAS in material files)

• MJ Pdf (mostly because its simple but has printing and text copying)

• Tachiyomi for reading manga
• Glider, a Hacker News client
• Megalodon, a Mastodon client with Material You design
• Seal, an Android frontend for yt-dlp, used for downloading YouTube videos
• FairEmail, a privacy friendly email client

I'd like to mention ImgurViewer, can handle quite a lot of image/video links. Particularly useful at the moment with all these new lemmy apps not having the best handle over links.

It's very interesting that OP doesn't use microG. How do you deal with no notifications? Do you use apps with custom (non-google) notification support? What are the disadvantages?

Here's a list of apps I use that are not on OP's list:

• ACCA (root required) | Custom charge cycle
• Antenna Pod | Podcasts
• Birthday Adapter | Pulls birthdays out of contacts and pushes them to your calendar
• Catima | For cupon card and stuff with barcodes
• DuckDuckGo browser | very minimal browser
• GadgetBridge | FOSS client for smart watches (I used it for a MiBand 6)
• Glider for HackerNews | Hackernews mobile client
• LibreOffice viewer | for viewing non-pdf documents
• Mullvad VPN | Privacy respecting VPN with a flat monthly fee
• Notally | Local only note taking app
• OctoDroid | github client
• OpenBoard | keyboard
• OrganicMaps | Ligheweight maps based on OSM
• PDF doc scan | Document Scanner
• QuickWeather | Simple Light weather app (GadgetBridge compatible)
• RadioDroid | Internet radio player
• RH voice | TTS engine
• Signal | Privacy respecting chatting app
• Simple Text Editor | mainly for viewing files
• Usage Direct | Phone usage monitor

Compared to OP, I do use MicroG with LineageOS. I also use quite a few closed source apps (banking apps, uber-like, car/bike sharing, some local apps for public transport, chatting apps, navigation, etc) but I do try my best to avoid them if I can. From time to time I log into Facebook / Instagram or use Google Maps in the browser, but don't have the apps installed.

Amazing list. I would also recommend Obtainium for keeping up the updates directly from sources like Github.

• FFUpdater Updater for privacy friendly browsers
• Voice Audiobook player
• Gmaps WV WebView wrapper for accessing the web version of Google Maps
• Feeder RSS reader
• Omni Notes Note taking app
• Simple Calendar Pro Calendar app and widget, syncs with DAVx⁵
• Simple SMS Messenger SMS app
• Material Files Material design file manager
• Binary Eye Barcode / QR code scanner
• Audio Recorder Record audio files

Not on F-Droid

• Signal Encrypted messaging app
• Edge Multi cryptocurrency wallet

Next Player also deserve a mention. It's still in beta stage though, but quite solid.