Productivity
1843 open source Productivity apps
MemoryGuardian
APK
A Small App for Enhanced Privacy & SecurityMemory Guardian is a lightweight Android app that enhances user privacy and security by automatically clearing the clipboard at set intervals. This helps protect sensitive information, like passwords, from potential leaks to other applications.Key Features:Automatic Clearing: Set customizable intervals for automatic clipboard clearing.Manual Clearing: Use the "Clear" button for immediate action.Clipboard Editing: Edit clipboard content directly within the app for quick adjustments.Notifications: Get notified when the clipboard is cleared.Dark Mode: Switch between light and dark themes for a personalized experience.Tiny: The app is small in size and does not consume much storage space.No Permissions: Memory Guardian does not require any permissions to function, ensuring user privacy.No Ads: Enjoy an ad-free experience with no interruptions.Minimalistic: Experience a clean and clutter-free interface for a distraction-free user experience.Open Source: Contribute to the project and help improve the app for everyone.
F-DroidGitHubIzzyOnDroid
Mempal
APK
Mempal is a Bitcoin network monitoring app that allows users to effortlessly track key metrics. It's the essential tool for users who want to optimize their Bitcoin usage and save on fees. Key Features Detailed Mempool Insights: Mempal provides in-depth information about the current state of the Bitcoin network, including current block height, hashrate, mempool size, fee rates, and fee distribution. This allows users to gauge network congestion and make informed decisions regarding transaction fees. Real-Time Notifications: Tailored notification settings to receive alerts when transaction fees decrease, when a specific TXID is confirmed, or when new blocks are mined. Fee Estimator: Calculate transaction fees by selecting address type, number of inputs and outputs, optional multisig configuration, and fee rate preference. Custom Servers: Connect Mempal to a self-hosted mempool server so you don't have to trust third parties to obtain information about the Bitcoin network. Tor Integration: Built-in Tor integration to preserve your privacy when tracking TXIDs. Widgets: Receive quick and up-to-date information about key network metrics.
F-DroidGitHub
MensaPlan
APK
MensaPlan versorgt Dich mit den Speiseplänen Deiner Kantine: * Mensa Hochschule Pforzheim * Mensa am Adenauer Ring * Mensa Molkestraße * Mensa Erzbergerstraße * Mensa Schloss Gottesaue * Mensa I Holzgarten (Stuttgart) Neben der Auflistung der Gerichte und ihrer Preise ist es auch möglich, selbige auf Allergene zu filtern.
F-DroidGitHub
Mensinator
APK
Mensinator Mensinator is the ultimate period tracker designed for those who prioritize simplicity, privacy, and user-friendliness. 🌟 Overview Mensinator provides a clean and intuitive interface for tracking your menstrual cycle, monitoring your periods, and viewing essential statistics—all without the need for sign-ups or sharing personal data. All information is stored securely on your device, ensuring your privacy is always protected. 🛡️ Key Features Effortless Period Tracking: Easily mark your periods, view your cycle, and access statistics all in one place. 📅 No Sign-Up Required: Start using the app immediately—no account creation or personal information required. 🎉 Complete Privacy: Your data is stored locally on your device. We do not collect, share, or sell any personal information. 🔒 Easy Navigation: Quickly switch between months and track your cycle with just a few taps. 🖐️ Clear Statistics: Instantly view your average cycle length, average period length, and next period prediction right below your calendar. 📊 Historical Insights: Get a summary of all your tracked periods to better understand your menstrual health over time. 📈 Visual Indicators: See visual indicators on the calendar for existing periods and selected dates. 🔴🔵 Customizable Colors: Personalize the app's appearance by customizing colors to your preference. 🎨 Export and Import Data: Easily export your data to a JSON file for backup or transfer and import it back into the app whenever needed. 📂 Who Should Use It? Mensinator is perfect for anyone seeking a straightforward and private period tracking solution. Whether you're tracking for health reasons or simply keeping an eye on your cycle, Mensinator makes it easy and secure. Getting Started To get started with Mensinator, you can either get it from IzzyOnDroid or from GooglePlay and start tracking your menstrual cycle with ease and privacy. ContributingWe welcome contributions to improve Mensinator! If you'd like to contribute, please fork the repository and submit a pull request. For major changes, please open an issue first to discuss your proposed changes. You are also welcome to join our Discord to discuss further or simply to chat with us! License This project is licensed under the MIT License - see the LICENSE file for details.
F-DroidGitHubIzzyOnDroid
Mental Math
APK
"Mental Math" is a simple and clean Android app for mental arithmetic training. You can practice on your own or challenge friends to compete and improve your skills. The app is open source and respects your privacy. Customizable Training Select which arithmetic operations to include (+, −, ×, ÷). For each operation, choose from nine difficulty levels to customize your training precisely to your skill level. Two Game Modes • Task Mode lets you complete a fixed number of tasks (10, 20, 30, 40, or 50). • Timed Mode challenges you to solve as many tasks as possible within a time limit (1, 2, 3, 4, or 5 minutes). Challenge your Friends You can share a game link to: 1. Replay a completed game with the exact same tasks to compare scores with friends. 2. Start a new game with preset settings for a fair and fresh challenge for everyone. Difficulty Calculation Task difficulty is determined using algorithms based on column addition, column subtraction, long multiplication, and long division, creating realistic and well-balanced exercises. Detailed Results After each game, view a detailed summary that includes your selected settings, your performance (accuracy, speed, and score), and a complete list of all your tasks and answers for review. Personal Leaderboard Your top 10 results are displayed separately for each combination of settings, allowing you to easily track your progress. You can also review detailed summaries of your top games at any time. Game History Explore the complete history of all your scored games. You can sort the list by time or numerically to find specific games. Anytime, you can revisit any match to view a detailed summary of its results. Practice Reminders Set up periodic reminders to support regular mental math practice. Notifications are sent in the evening (around 6 p.m.) and can be scheduled daily, every three days, or weekly. Clean Design A simple and minimalist app design with no unnecessary elements or distractions, designed to keep your focus fully on mental math training. Supports both light and dark modes. Open Source, Private, Free & Ad-free "Mental Math" is fully open source, free to use, and does not contain any ads. It also does not collect, store, or process any personal data, nor does it use trackers or third-party services.
F-Droid
MergedWiFiNLP
APK
This is a UnifiedNlp backend for use with simple CSV databases. The corresponding tool for generating databases is WiFiDatabaseMerger. Once you generate a CSV database using the desktop program or by other means you can import it into MergedWiFiNLP. Pre-made databases are likely to be offered in the future once licensing issues are clarified. Utilizies an exponential backoff algorithm to prevent excessive recalculation of location to save battery.
F-Droid
Meshtastic
APK
Meshtastic is a tool for using Android devices with open-source, off-grid mesh radios. This app is the main client for the Meshtastic project, allowing you to manage your mesh devices and communicate with other users. For more information about the Meshtastic project, please visit our website: [meshtastic.org](https://www.meshtastic.org). The firmware that runs on the radio devices is a separate open-source project, which you can find here: [https://github.com/meshtastic/Meshtastic-device](https://github.com/meshtastic/Meshtastic-device). **Community and Support** This project is currently in beta. We would love to hear from you! If you have questions, feedback, or encounter any problems, please join our friendly and active community: * **Discussion Forum:** [https://github.com/orgs/meshtastic/discussions](https://github.com/orgs/meshtastic/discussions) * **Discord:** [https://discord.gg/meshtastic](https://discord.gg/meshtastic) * **Report an Issue:** [https://github.com/meshtastic/Meshtastic-Android/issues](https://github.com/meshtastic/Meshtastic-Android/issues) **Documentation** To learn more about the features and capabilities of this app and Meshtastic, please view our official documentation: [**View Documentation**](https://meshtastic.org/docs/) **Translations** You can help translate the app into your native language using Crowdin: [https://crowdin.meshtastic.org/android](https://crowdin.meshtastic.org/android)
F-DroidGitHubIzzyOnDroid
Meteo Weather Greece
APK
"Meteo Weather Greece" is a lightweight, beautiful (Material 3) app that fetches its data from meteo.gr, which is property of the National Observatory of Athens (www.noa.gr). Features: - Light/Dark/System theme chooser - Shows information like current temperature, wind speed and more - Region selection - Fully open source and privacy friendly. Known limitations: - Cannot show information for some regions because meteo does not provide data for them.
F-Droid
Metronome
APK
A simple and modern Metronome Application for Android. This application provides you with all you'd expect from a metronome without added complexity. The features are intentionally kept simple and usable: 1) The metronome itself. 2) Tap Tempo (to input those trickier tempos). 3) Saving and restoring presets (so you can switch between musical pieces easily).
F-DroidGitHub
Microchip
APK
Microchip shows processor usage as an icon in the status bar. If needed, the notification can also be shown in the lock screen as a priority notification. Microchip also shows the memory usage of the device.
F-DroidGitHub
Microphone
APK
Note: This app is no longer maintained, it's source repository has disappeard in 6/2025 – so there won’t be updates anymore. Microphone is a simple app that outputs the sound of the built-in microphone.To avoid acoustic feedback, the app works only when an audio cable is plugged in or a bluetooth audio receiver is connected to the smartphone.The app is ad-free and has no additional settings, so it is easy to use.
F-DroidGitHubIzzyOnDroid
Middor
APK
Middor is a free and open-source Android application for mirroring apps on your device. With built-in support for horizontal flip and 180° rotation, Middor can be used to: Display apps on a HUD Project content onto a car windscreen (e.g. Google Maps navigation) View mirrored images and videos Middor only supports devices running Android 14 QPR2 or higher, as it relies on the single app screen sharing feature. For more details, see Android 14 - App Screen Sharing: https://developer.android.com/about/versions/14/features/app-screen-sharing For usage instructions, see https://github.com/nktnet1/middor/discussions/2 Permissions SYSTEM_ALERT_WINDOW: to draw a mirror overlay on top of other apps FOREGROUND_SERVICE: to run the mirror service continuously while the overlay is active FOREGROUND_SERVICE_MEDIA_PROJECTION: for capturing the screen content of the underlying app POST_NOTIFICATIONS: (optional) to display the mirror service notification with additional actions Contact Questions/Feature Requests Create a Q&A for questions and Ideas for feature requests on GitHub discussions: https://github.com/nktnet1/middor/discussions Bugs/Issues Report bugs by creating a GitHub issue describing the problem and how it can be reproduced: https://github.com/nktnet1/middor/issues Please also include your device model, app version and android version. Other For all other inquiries, please reach out to: support@middor.nktnet.org
F-DroidGitHubIzzyOnDroid
MidniteSolar Classic Monitor
APK
Unofficial status monitor for Midnite solar's Classic 150, 200, 250 Charge Controller. It is a Read Only Program, it does not write to the Classic. If the app detects a Whizbang Junior current monitor, the State Of Charge will display along with a bi-directional current gauge. Basic support for the Tristar MPPT charge controller from Morningstar is also included.
F-DroidGitHubIzzyOnDroid
M
Migraine Log
APK
Migraine Log lets you easily log your migraine attacks (or other headaches). It is built to make it as easy as possible, only requiring a date and the strength of the attack, while allowing you to optionally add details like what medications you took and notes about the attack. This lets you monitor your migraine and can assist you and your physician in finding the correct treatment for you. The user interface is built with migraine sufferers in mind, and uses soft and dark colours so that you can use it during an attack. Migraine Log respects your privacy and does not request network access, so your information does not leave your device unless you explicitly use the export function in the app.
F-Droid
Mindful Attention Awareness Scale
APK
The Mindful Attention Awareness Scale (MAAS) is a 15-item scale designed to assess a core characteristic of dispositional mindfulness, namely, open or receptive awareness of and attention to what is taking place in the present. The scale shows strong psychometric properties and has been validated with college, community, and cancer patient samples. Correlational, quasi-experimental, and laboratory studies have shown that the MAAS taps a unique quality of consciousness that is related to, and predictive of, a variety of self-regulation and well-being constructs. The measure takes 10 minutes or less to complete. Reference: Brown, K.W. & Ryan, R.M. (2003). The benefits of being present: Mindfulness and its role in psychological well-being. Journal of Personality and Social Psychology, 84, 822-848.
F-DroidGitHubIzzyOnDroid
Mindful Notifier
APK
Mindful Notifier is a simple mindfulness-based app which displays a notification reminder at user-configurable intervals. It is another take on a 'Mindfulness Bell', with the addition of accompanying text to provide added context to the mindfulness reminder. The reminders are taken from a configurable list, and are chosen at random at each interval. The reminder interval can either be periodic (in intervals aligned to the top of the hour, down to a 15 minute granularity) or random (between a selected range of minutes). Some default reminders are provided as examples. You can add, edit, or remove these default reminders as you like. There are 5 different bells included, and you can also configure your own custom bell from your phone's local storage. This app works very well in conjunction with a smartwatch. In this mode you can also mute the bell to have silent mindfulness prompts throughout your day. This app uses the following permissions: - ACCESS_NETWORK_STATE: Required by the library used to launch the github source code site - RECEIVE_BOOT_COMPLETED: Required by the underlying alarm service to restart after reboot - WAKE_LOCK: Required by the underlying alarm service to wake up at the scheduled time - USE_FULL_SCREEN_INTENT: Required to show app in foreground from the reminder notification - VIBRATE: Required to vibrate during notifications - READ_EXTERNAL_STORAGE: Required for backup. Permission is requested upon first use. - WRITE_EXTERNAL_STORAGE: Required for backup. Permission is requested upon first use.
F-DroidGitHub
Mindfulness Meditation
APK
Various audio guides for mindfulness meditation: * Body Scan * Breath & Body * Sounds & Thoughts * 3-Step Breathing Space * Mindful Walking * Sitting Meditation (open) * 30 minute silent sitting, with bells Meditations are provided by and shared with permission of Dr. Rebecca Crane, Director of the Centre for Mindfulness Research & Practice at Bangor University.
F-DroidGitHubIzzyOnDroid
Mini Moods
APK
Mini Moods is an ad-free, open-source, no-frills mood tracker that gives you full control over your data.FeaturesMinimal interface. Mini Moods provides a simple, clear and elegant user interface that makes entering and tracking your data super simple.No Frills. Other apps often include accounts, mandatory internet connections, ads, event logging or daily descriptions whereas Mini Moods was created to simplify the process of mood tracking.Monthly Tracking. All your historical moods are visible on a monthly basis within the app. You can select a single month at a time to view daily moods and trends.Data Export. To view more than one month at a time, Mini Moods allows you to export your data in CSV format.Widget. The Mini Mood widget allows you to view, modify or add today's mood from your desktop without the need to open an app.Dark Mode. Native support for dark-mode built into all aspects of the app including widgets.Open Source & Completely Ad-Free. In addition to giving you access to all your data through the CSV export, Mini Moods is open source and contains no ads. You can view the source and contribute here.Mini Moods uses the INTERNET permission for crash reporting via Sentry.
GitHubIzzyOnDroid
Minimal
APK
Minimal todo is a very light and useful app, allowing you to add todos easily and quickly. It follows the Material guidelines completely.
F-DroidGitHub
Minimal Currency Converter
APK
It is a very lightweight app designed for quick, offline currency conversion. Ideal for travelers and anyone needing a fast, reliable conversion tool without any extra features. It just does what is supposed to do nothing else. Features: - It’s compact, easy to use, fast - Offline - No data collection, everything is on your device. You delete the app, and everything with it - Big characters for easy reading - No ads - Quick conversion resuming after exiting the app How to: The first screen is used to input the name of the currencies and the conversion ratio (pay attention to the direction of the conversion). The second screen will have the amount input with the automatic display of the corresponding amount in the other currency. It will automatically save the inputs, so that if you close the application it will resume right from the conversion screen, for fastest usage.
F-DroidGitHub
Minimalistic Price Converter
APK
Convert prices of fiat shitcoins easily. - **Minimalistic! Just type! No extra steps!** - All prices are recalculated together - It uses Bitcoin as the base currency - BTC and Sats view
F-DroidGitHub
Mint Calculator
APK
A simple calculator and unit converter app with Material Design 3 inspired by Windows Calculator Features - Standard Calculator - Calculator history - Date Calculator - Simple unit converter (Angle, Time, Data, Length, Area, Volume, etc...) Planned updates - Scientific calculator
F-DroidGitHub
Miracast Shortcut
APK
Includes both, a simple activity that simply opens the settings menu to choose a display/cast your screen and a widget that can open that settings screen with one click and list the device you are streaming to if Miracast is currently enabled.
F-DroidGitHub
Mirror
APK
ABOUT This application allows you to use your device as a mirror by streaming your frontal camera. It is open-source, free to use and does not require any extra permissions except camera. FEATURES * Pause stream, so you can better look on some aspects of yourself * Material 3 design * Convenient GUI * Keeps screen on * Full-screen image CREDITS * App icon: Mirror icons created by prettycons: https://www.flaticon.com/free-icons/mirror * @Poussinou and @inson1 for metadata improvements LICENSE The app is licensed under GNU General Public License v3.0 REPOSITORY The source code of app may be found by link: https://github.com/Andrewerr/Mirror
F-DroidGitHub