FOSS apps: free and open source

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

page 69

Randomly/Die

Random number generator with fast UI, dice, hex, binary and secrets
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Rank-My-Favs

Rank your favorite things, using simple pair-wise matchups.
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid GitHub Zapstore
RapidSplit

Split trip costs fairly: per leg, not flat. Offline, no account needed.
- Finance
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
RaspFinder

Quickly find your Raspberry Pi on your network
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
Ratafuel

Find the cheapest fuel in France near you.
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
RaumBaller

Old-school scrolling shoot 'em up game
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Raven

This app uses APIs and web scraping to fetch news articles.
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid GitHub Zapstore
RCX - Rclone for Android

A file manager for Android, using rclone for the heavy lifting.
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
RE:INSTEAD

Interactive fiction games
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Read Later

Bookmark. Read. Listen. The simple way to manage your reading list.
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid IzzyOnDroid GitHub Zapstore
Read You

A modern and elegant RSS reader with Material You design
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Read4SpeechExperiments

Read for Automatic Speech Recognition Experiments
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
ReadBear

A cute&chill CBZ, PDF, EPUB reader that's ridiculously configurable!
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Readeck App

Android client for the Readeck self-hosted read-it-later service
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid GitHub Zapstore
Reader for Selfoss

A new RSS reader for selfoss (http://selfoss.aditu.de/)
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Readrops

multi-services RSS client
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Readwide

Local-first reader and file browser
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Really Basic Vocab

simple flashcard app
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
RealmScore

Score keeper for the Fantasy Realms card game
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Rebooter

Reboot device on schedule or variety of conditions
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Reckoning Skills (Privacy Friendly)

(SECUSO) Improve your calculation skills in the four basic operations
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
RecollDroid

UI for the Recoll fulltext search engine.
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Record Play Reverse

A simple audio toy that lets you record and playback audio forward or reversed.
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
R
Record Time Droid

Record date and time to manage times to tasks
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
RecorderX

RecorderX is an application designed for high-fidelity screen capture.
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Recording Studio Lite

Audio recorder
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid GitHub Zapstore
Recurring Expense Tracker

Keep track of your monthly spending
- Finance
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid IzzyOnDroid GitHub Zapstore
Red Moon

Screen filter for night time phone use
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Red Screen

Show a red screen
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Reddinator

Reddit Widget
- Communication
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Redomi

Open songs from different platforms to your favourite one
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid GitHub Zapstore
RedReader

Client for reddit.com
- Communication
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
RedTrigger

System-wide shoulder triggers for Nubia Red Magic phones
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
ReFra

ReFra — A modern, open-source media gallery
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
ReGeX

A regular expression matching game
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Regex Crossword

Solve Crosswords defined by Regex rules!
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Regex Crossword

Offline regex-crossword puzzles in hexagon and rectangle grids.
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
RegisCat

RegisCat is a map of surveillance cameras in Chile
- Navigation
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Relagent

Trustworthy AI assistant that runs 100% on your hardware
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
Relatrix

An active knowledge-management and multi-modal note-taking platform.
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
RelayPony

Encrypted file transfer, phone to phone. Offline, no account, no cloud.
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Reloado Auth - 2FA Authenticator

Secure, Free and Open Source 2FA TOTP Authenticator App with Sync and Web Access
- Security & privacy
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Remail

A clean, high-fidelity Gmail-inspired client for Resend.com.
- Communication
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Remember My Sort

Xposed module that persists Android file picker sort order
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid GitHub Zapstore
Remind Me!

Set alarms for a specific date in the future (alarm, not a reminder!).
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid IzzyOnDroid GitHub Zapstore
Remote Numpad

This application transforms your smartphone into a numpad for your computer.
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Remote Video Camera

Stream video/audio between two phones. Zero configuration.
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
RemotePhone

Mirror and control your Android phone from Linux over WiFi
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore