FOSS apps: free and open source

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

page 76

Simple Ethereum Widget

Show current Ethereum exchange prices
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
Simple File Manager

No bloat simple file manager
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Simple Flashlight

Led light controller with brightness control and customizable color, stroboscope
- Android only
Google Play Aurora Store F-Droid GitHub
Simple Frame

Simple app to display pictures as in a digital frame.
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Simple Keyboard

An app for those who only need a keyboard and nothing more
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid IzzyOnDroid GitHub Zapstore
Simple Litecoin Widget

Show current Litecoin exchange prices
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
Simple Money Tracker

Yet another personal accounting app
- Finance
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Simple Nextcloud

A small Nextcloud file browser without a duplicate upload cache
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Simple Random Stock

Randomly select a stock from one of the three US indexes
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Simple Reboot

Make reboots great again - one restart at a time
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
Simple Search

Simple and customizable search bar
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
S
Simple sms remote

Control your device by sending text messages
- Communication
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Simple Sudoku Game

Simple Sudoku Game. Easy to play, easy to enjoy.
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Simple Text Crypt

Encrypts plain text using AES256
- Security & privacy
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Simple Thank You

A warm Thank You for supporting our modern & easy Simple Mobile Tools apps!
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
Simple Time Tracker

Time tracker for work, study, and building better daily habits.
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid IzzyOnDroid GitHub Zapstore
Simple. : Fitness Simplified.

An easy to use fitness app that lets you create, schedule and track your workout
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
SimpleAdvancedMetronome

A simple and accurate metronome.
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
SimpleAppDowngrader [ROOT]

Downgrades installed apps with an apk-file
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
SimpleEmail

Simple and minimalistic email app
- Communication
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
SimpleHIIT

Customisable HIIT timer with animated exercises
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
SimpleLogin | Anti-spam

Protect your email inbox with a secure and open source solution by SimpleLogin
- Communication
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
SimpleMarkdown

A simple markdown editor
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
SimpleReminder

Quickly create reminders and get notified later
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
SimpleRT

Reverse Tethering utility
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
SimpleSSHD

Easy to use SSH server
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
SimpleXray

A simple, fast Xray client
- Security & privacy
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Simply Scored

Track your game scores easily.
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
SimplyTranslate Mobile

A privacy friendly frontend to Google Translate
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
SimpMusic

A simple music app using YouTube Music for backend
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid GitHub Zapstore
sing-box

The universal proxy platform
- Security & privacy
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
SinGal Dictionary

Galician Synonyms Dictionary
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Sinhala for AnySoftKeyboard

AnySoftKeyboard Sinhala Language pack
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Sipdroid

A SIP (VOIP) client
- Communication
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
SIS

Unofficial client for SIS CUNI (Student Information System, Charles University)
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Siteswap Generator

Generate juggling siteswaps for passing
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
Sithakuru

Libre Sinhala Keyboard
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Six Shooter

Western revolver drum spinner — pick a winner among up to six players
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Sketching (PFA)

(SECUSO) Create sketches without advertisement or unnecessary permissions
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Skewy - anti eavesdropping

A tool to prevent eavesdropping and ultrasonic access of your smart phone.
- Security & privacy
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid
SkillApp

Simple, fully offline time-tracking app
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
SkinBread

Lightweight application for viewing Minecraft skins from different services.
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Sky Map

Sky Map turns your phone into a window on the night sky.
- Navigation
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Skylib

An alternative Bluesky frontend
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid Zapstore
Skylight Wallet

A Monero light-wallet
- Finance
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
SkyPulse

Decode and monitor 1090 MHz ADS-B aircraft with an RTL-SDR
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
SkyTube

An ad-free and open-source YouTube client.
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
SkyTube Legacy

An ad-free and open-source YouTube client for legacy devices.
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore