FOSS apps: free and open source

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

page 49

Magnifica

A magnificent magnifier
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
Magpie

Tamper-evident incident journal with encrypted, self-proving exports
- Security & privacy
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Mahjong Scoring Compass

Automatic scoring compass for Riichi Mahjong
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Mahjong Solitaire

Classic tile-matching puzzles without interruptions, tracking, or ads.
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
maid

Maid is an open source app for interacting with artificial intelligence models.
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
mail

is a secure and open source e-mail client
- Communication
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
MainTask

Reminders for your recurring tasks: filters, plants, backups, car checks…
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Make Some Noise

Push a button, or move your phone, to make some noise
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
MakeACopy

Privacy-focused document scanner with OCR and PDF export
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Mako

Privacy-first Android launcher designed for focus, speed, and simplicity.
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Malarm

Flexible no-frills alarm scheduler, free and open source
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Man Man

View, download and search Linux manpages
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Mancala

Mancala Game
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Manglish
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub
Manholer

Field logging for manholes, pipes, and field measurements.
- Navigation
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
MapComplete

Thematic, editable maps based on OpenStreetMap
- Internet
- FOSS
- Free
- No ads
- Android only
Google Play Aurora Store F-Droid Zapstore
MapFlip - Apple to Google

Redirect Apple Maps links to Google Maps. Fast Apple map redirect & converter.
- Navigation
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Mapple: Redirect Apple Maps

Open Apple Maps links in your default maps app
- Navigation
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
maripànaTokana

Weather app showing metric and imperial units side by side in 8 languages
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Markdown Editor

Markdown Editor is an app for easy editing and styling of ".md" files.
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Markdown Reader — PilcrowMD

Read & edit Markdown beautifully. No ads, no account, open source.
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
M
Markdown Widget

Display markdown files as widgets on the home screen
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
MarketMonk: Stock Tracker

Track stocks, build a portfolio, and view performance charts.
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
MarkReader - Markdown Reader

Offline markdown, notes, and code reader with syntax highlighting
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Marlin

Identify marine species on the spot and keep a personal sightings life list
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Marmalade TTS

Fast, natural, private text-to-speech for your whole phone. Works offline.
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Mars Live Wallpaper

Rotating red planet
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
MarschRide

A bike-computer with BLE-sensors, a offline map and GPX-Recording
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Martial Body

Offline 24-week MMA preparation trainer. No ads, no tracking, no cloud.
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Marxist Tamil

Read & Listen to essays from Marxist tamil magazine
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Maskan — Private AI Chat

Private BYOK AI chat. 11 providers, voice, image, export. 3 languages.
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
MasterMindy

The customizable Mastermind clone
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
Mastodon

Where conversations happen
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid IzzyOnDroid GitHub Zapstore
Mat-O-Id

Pay beverages with RFID-Tag
- Finance
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Match 3

Minimal and open-source Match-3 puzzle game
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
MateDroid

View Tesla vehicle data from your self-hosted Teslamate instance
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Material Files

Open source Material Design file manager
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
M
Material Flashlight

Flashlight with some cool features
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid
Material Tea Timer

Time your tea with style
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Materialious

Modern material design for YouTube and Invidious.
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid GitHub Zapstore
Materialistic Nouveau

Material design Hacker News client for Android
- Communication
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Materializr

Maker 3D CAD - the middle ground between Tinkercad and FreeCAD
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
MaterialOS

Material Design icons for your homescreen
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
M
Materials Live Wallpaper

A live wallpaper that renders materials
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
Math Clock

Widget, which shows the time in German words based on fractions
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Mathe-Trainer

Mental arithmetic practice for primary school. German interface.
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Mather

A powerful expression-based calculator, unit converter, and computation engine
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Matrix Puzzle

A minimal, open-source matrix puzzle game also known as floor puzzle
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore