FOSS apps: free and open source

Free and open-source software: the source code is public under an open licence.

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F-Droid Nearby

Exchange free software apps locally, device-to-device, even without internet!
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
F-Droid Privileged Extension

Services to allow F-Droid to securely install and update apps
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
F
F-Droid Privileged Extension OTA

Services to allow F-Droid to securely install and update apps
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
F
Fabularium

Create and play interactive fiction
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
FadCam

Background video recorder, screen recorder and remote camera control.
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid GitHub Zapstore
FaFa Runner

Enjoy smooth gameplay, stunning graphics, and endless fun
- Games
- FOSS
- Free
- No ads
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Fahrraddiebstahlwarnung

Bicycle thefts and accidents in Berlin
- Security & privacy
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
FairEmail

Fully featured email client. Neat, intuitive user interface. Privacy friendly
- Communication
- FOSS
- Free
- In-app purchases
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid IzzyOnDroid GitHub Zapstore
F
Fairphone Checkup

Test various components of your device
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Fairphone Moments

Fairphone Moments a minimalist way to use your phone with less distraction.
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
FairScan – PDF Scanner

Scan a document and get a clean PDF you can save or share instantly
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
FairSpeed - Speed Tester

A lightweight, privacy-focused network performance monitor.
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Fairy Mahjong

Clear a layered garden board with a four-slot matching hand
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Fake Contacts

Create fake phone contacts, for data-poisoning.
- Security & privacy
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
FakeBlankScreen

An application that only displays a black screen to reduce power consumption.
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
FakeGapps

Used with µg GmsCore to enable Google Cloud Messaging (GCM) and more
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
FakeStandby

Turn off your screen while keeping apps running
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
FakeTraveler

Fake your location
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Fall

Lets your phone scream if it moves too fast
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
FallASleep - Device sleep timer

Lock the screen after a timer runs out.
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
Falling Blocks

A mobile Game, where you need to collect the blocks matching your colour
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub
Faraday

Secure messenger for Matrix based on Element
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Fast Draw

A simple Android launcher with categories
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Fast N Fitness

Track fitness workouts
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
Fast Shopping

Simple app for easy shopping list making, developed with simplicity in mind.
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
FastLyrics

An app that downloads lyrics for the song, you're listening to
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid GitHub Zapstore
FastTimes

Simple, private, open-source intermittent fasting tracker.
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
FastTrack

Track what your body is doing while fasting
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Fate Sheets

Manage your Fate character sheets
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Fatto

your Taskwarrior Android companion
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Fauxx - Privacy Through Deception

Poison data collection profiles by generating decoy signals.
- Security & privacy
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Fcitx5

Fcitx5 input method framework and engines ported to Android
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Fcitx5 (Anthy Plugin)

Anthy (Japanese input method) engine support for Fcitx5
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Fcitx5 (Chewing Plugin)

Chewing (Zhuyin/Bopomofo input method) engine support for Fcitx5
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Fcitx5 (Clipboard Filter Plugin)

Apply ClearURLs on clipboard
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Fcitx5 (Hangul Plugin)

Hangul (Korean input method) engine support for Fcitx5
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Fcitx5 (Jyutping Plugin)

Jyutping (Cantonese input method) engine support for Fcitx5
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Fcitx5 (RIME Plugin)

RIME (Rime Input Method Engine) support for Fcitx5
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Fcitx5 (Sayura Plugin)

Sayura (Sinhala input method) engine support for Fcitx5
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Fcitx5 (Thai Plugin)

Thai input method for Fcitx5
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Fcitx5 (Unikey Plugin)

Unikey (Vietnamese input method) engine support for Fcitx5
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Featherline: HRT Tracker

Private medication tracker for HRT routines — plans, reminders, personal logs
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Fechtkarte

Warm-up drill card generator using notation credited to Joachim Meyer
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
FediDay Schedule

A schedule app for the FediDay 2026.
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
Fedilab

Fedilab - a multifunctional Android client to access the distributed Fediverse,
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
FediPhoto-Lineage

FediPhoto-Lineage - quickly post photos to the Fediverse.
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Fediplan

Schedule your messages on Mastodon/Pleroma
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
FediSuite

Schedule, manage and analyze Fediverse accounts on any FediSuite instance
- Communication
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore