AntennaPod Podcast player with awesome ui

NewPipe: Lightweight YouTube front-end, background playback and downloads without Google Play services.

Breezy weather. It plays nice with gadget bridge and if you use the git version you can choose all kinds of weather sources, the fdroid one is a bit more restrictive. Also it just looks great and is easy to interpret at a glance.

Aegis - Google Authenticator compatible 2FA

Syncthing — Continuous file synchronization, self-hosted alternative to cloud.

obligatory shilling for LocalSend, it's airdrop except open-source and completely cross-platform!

WifiAnalyzer, great for finessing your own WiFi channels by providing a scan layout of all 2.4Ghz and 5/6Ghz channels in your area.

You can see bandwidth, signal strength, overlapping networks, everything.

I use it to diagnose deadspots in my home, or to search for hidden wireless cameras in hotel rooms

Fossify apps.

Replace your phone, calendar, and more standard apps with foss apps

Drip A tracking free, cloud free and subscription free period tracker. There are a lot of period tracking apps around, but most of them try to push a subscription on their users and putting that data into a cloud can be dangerous in many countries where abortions are forbidden. You know that some judge in Texas wants to have access to that data. Save yourself or the women in your life from subscribtion and tracking hell and switch them over.

I use davx5 to sync my caldav calendar (radicale) with my Android.

Firefox. Shouldn't need introduction.

Yes there are forks that may be better to use but let us not forget the one main browser family who's been giving us a chance at fighting against ~~Malware~~ browsers with zero respect for our privacy.

Shelter - isolate and run multiple instances of apps using Work Profiles.

Similar to Island and Insular.

Obtainium. Lets me install and track apps that aren't on fdroid yet, or are in alpha release.

KDE Connect! Share files, clipboard, links from one device to another, use your phone as a mouse or laser pointer.

CoMaps. Google Maps alternative. Can save paths and do navigation with TTS. Gets its data from the amazing OpenStreetMap.

osmand~ – frontend to openstreetmap with included pathfinder.

Droid-ify Way better F-Droid Client with many Repos Out of the box

QUIK SMS — Open source replacement to the stock messaging app on Android. It is a continuation of QKSMS.

Trail Sense - a lot of useful tools like compass, ruler, bubble level, metal detector, unit converter, 3D AR astronomy visualizer and many more.

Mindustry: one of the few great games on f-droid (tower defense)

FairScan to scan documents.

FlorisBoard: privacy-friendly, highly customizable open-source keyboard.

Capy Reader - RSS reader. Not only a cute capybara icon, but a really nice reader with regular updates.

ThumbKey A 3x3 keyboard that made it drastically easier for me to type on my phone without doing thumb acrobatics. Took me a couple weeks to internalize its layout, but now that I did I can't go back to qwerty.

KISS Launcher - blazingly fast launcher focused on search

Seriously you don't know what you're missing if you're not using this.

AnkiDroid — Mobile Anki-compatible spaced-repetition flashcard app for efficient learning.

Element X - Secure Chat & Call: for private communication using Matrix protocol.

FindMyDevice. Alternative to Google’s find my device. You send a text from a different phone number, and you can do things like get the GPS location, lock the device, erase the device, ring the device, or have the device take a picture of its location.

Image Toolbox
Shrink, convert, stitch, draw, OCR, blur, do almost anything to an image.

URLCheck Share a URL to this app to preview it before opening, sharing or copying. It also has multiple neat features, like

• removing trackers
• quickly removing URL parts and extracting encoded text e.g. to skip redirection
• custom rewrites; can be applied automatically

https://codeberg.org/svewa/MedicalCalendarLog

I use this every day to keep track of my medication, remind me of stuff I want to do regularly (measure weight, take specific meds but also chores). Disclaimer: I'm the author, could not find anything alike.

Audile - music recognition app

Feeder: RSS reader

https://f-droid.org/packages/com.trianguloy.urlchecker

url checker works as your mobiles default browser to easily edit links before opening them in a browser of your choice, I love this thing, I have given up trying to tell people about url hygene

SpamBlocker (Call & SMS)

intelligent spam blocker for SMS and calls

Catima - loyalty card wallet

WhoBird Identifies Birds by their sound

Molly.im Signal Fork with the ability to have it on multiple Devices

@PumpkinDrama@reddthat.com
Librera Book Reader. A book reader with lots of supported formats.

YTDLnis - a yt-dlp fronted for android.

Red Moon. Blue light filter for screen. Makes it less hurting for eyes to use phone at night, or generally in dark.