Productivity
1843 open source Productivity apps
BatteryFu
APK
Try to extend battery life by changing always-on mobile/wifi data to periodic sync (meaning it disables your mobile data and/or Wifi, then checks your accounts every X minutes). Requires Root on Android 5.0+
F-DroidGitHub
BatteryTemperatureDisplay
APK
BatteryTemperatureDisplay shows Android phone’s real-time battery temperature. The information is always visible in an icon in the status bar and in a notification, even while you use other apps. Practical uses of monitoring battery temperature: 🔥 Overheating detection during gaming or charging Li-ion battery degrades and loses its capacity when heated over 40 degrees Celsius for prolonged time. This can happen during gaming, 4K video recording, wireless charging. Set alarm to immediately get notified before battery gets actually overheated. 🧩 Prevent solder cracks under phone's processor Battery is the main channel for phone's process to dumpits heat. When your battery gets over 40 degrees Celsius under heavy load of gaming or video recording, phone processor is melting itself at that moment. Repeated cycles of processor overheating cause its solder to crack, leading to phone unable to boot and work. ⚠Reduce risk of phone li-ion battery fire Reaching 50 degrees Celsius may lead to li-ion thermal runaway and fire. Set an alarm to get alerted before your battery reaches this dangerous threshold. That is especially valuable if you leave your phone charging overnight, alowing to avoid cases of phone getting on fire while everyone in the house sleeps. 📊Use old Android as temperature logger Repurpose your old smartphone as temperature logging device to track the environment in your home, 🌱 greenhouse or 🐕 animal barn. Temperature fluctuations affect plant and animal health before they show visual stress signs. Log temperature for any time range - set if for minutes, hours, days, months. Temperature log is produced in timestamped CSV format, allowing for easy analysis in Excel, Google Sheets or any other spreadsheet editor. 🏃Heat stroke prevention During outdoor work or sports, let your phone to work as a body temperature monitor. If your phone reaches +40 °C in your pocket, you're in conditions that can cause heat exhaustion. ❄Body heat conservation Avoid excessive heat loss in cold weather. Phone placed against body shows how effectively your clothing retains heat during cold emergencies. 🚗Hot car safety Phone temperature rise in parked car indicates when interior becomes dangerous for children or pets - provides quantified warning beyond "it feels hot." 🥶Food safety monitoring Place your phone in a cooler during camping or power outages to know your food is safe. If the battery temperature rises above +4 °C, your food is entering the danger zone for bacterial growth. 🛏Bed assessment Place your phone between bed sheets and launch temperature logging. The log may highlight your bedding retains too much heat, affecting sleep quality and suggesting bed sheets material changes. 🏠Know heat insulation problems Phone temperature varying dramatically in different parts of your house reveals insulation issues. Rooms with poor insulation will cause your phone to heat up or cool down faster. 🌡Poor man's thermometer Track ambient temperature of any room with your phone if no dedicated thermometer is available. The Android Battery Temperature app is a tool for anyone who wants to monitor, log, and act on temperature data using nothing more than your own smartphone. The app can be both a safety instrument and a multi-purpose temperature monitoring solution. Created by Eugen Barilyuk EB43 https://eb43.github.io
F-DroidGitHub
BatteryVoltageDisplay
APK
BatteryVoltageDisplay shows Android phone’s real-time battery voltage. The information is always visible in an icon in the status bar and in a notification, even while you use other apps. Practical uses of monitoring battery voltage: 🔋 Check battery real health Spot signs of battery degradation. Watch for sudden or irregular voltage drops—these are early signs that the battery is degrading. 🔌 Catch bad chargers or cables During charging, voltage should rise smoothly (e.g., 3.7 V → 4.2 V). If it stays flat or jumps irregularly, the cable or adapter is likely defective. 💀 Avoid unexpected shutdowns Monitoring voltage lets you see the exact point where the phone shuts down from low battery. Helping you avoid surprises like the device shutting down at 30% charge. 📈 Save money on unnecessary battery replacement Monitor battery’s voltage to know its true health and decide a battery replacement only when it is actually needed. ⚠️ Prolong battery lifespan Batteries experience high stress when charged to their maximum voltage, which often happens before the charge indicator shows 100%. By monitoring voltage, you can unplug your phone at the optimal point to reduce stress and extend battery life. 🔎 Evaluate aftermarket replacement battery capacity Quickly know a replacement battery’s quaity. A good battery holds stable voltage under load, while a poor-quality battery drops quickly under use and spikes sharply when charging. The Battery Voltage Display app is a tool for anyone who wants detailed insights into their Android smartphone’s battery health. Key Features: - User-Friendly Interface: Designed with simplicity in mind, ensuring easy navigation and quick access to vital battery data. - Automatic Startup Support: Enables continuous monitoring without requiring manual app relaunches after a reboot. - Resource Efficiency: The app operates with minimal RAM usage, ensuring it does not interfere with system performance. - No Hidden Processes: Unlike many background apps, it does not run covert services, preventing unnecessary battery drain. - Manual Exit Functionality: Allows users to completely exit the app with a single button press, ensuring full control over system resources. - Ad-Free Experience: The app is entirely free to use without any intrusive advertisements disrupting the user experience. - Wide Compatibility: Works seamlessly on devices running Android 8 and newer versions. Created by Eugen Barilyuk EB43 https://eb43.github.io
F-DroidGitHub
Bazarnote
APK
Bazarnote is a simple note taking app geared toward shopping lists. It only keeps minimal information about items being bought offline. When going to a shop or bazaar, Bazarnote helps you keep track of all the items on your shopping list. It is a simple offline application. Just open the app, input your shopping list, keep track of your products, and that's all.
F-DroidIzzyOnDroid
Be nice
APK
Be nice is a modern Android launcher built with Jetpack Compose. It started as a tool to launch apps in split-screen mode to avoid forced rotation on tablets and foldables, and has evolved into a full-featured home screen replacement. Key features Modern design: Built entirely with Jetpack Compose and Material 3 Expressive for a smooth and responsive experience. App pairs and split-screen: Create app pairs to launch two apps side by side for multitasking and to avoid unwanted rotation. Works on phones, tablets, and foldables when the system allows split-screen. Folders: Organize your apps into groups to find them easier and faster. Hidden items: Optionally hide any apps; they move into a dedicated Hidden items folder that you can manage from Settings. Widgets: Add up to two widgets to the Favorites and widgets page for at-a-glance information. Large-screen layout: On large-screen devices, the Favorites and widgets page uses a two-pane layout where the right pane can host additional widgets. Configurable dock: Customize the dock on the Favorites and widgets page to launch the phone, messages, browser, or your favorite apps with a single tap. Whether you need a full replacement for your home screen or just a better way to multitask, Be nice adapts to you.
F-DroidIzzyOnDroid
B
BeWell
APK
This app measures your HRV and track your health. HRV method becomes more popular only in last ten years, however it was created in USSR to track astronauts' health.
GitHubIzzyOnDroid
Beacon Locator
APK
Scan, locate and track Bluetooth LE beacons (Eddystone, iBeacons or AltBeacons) allows you to define actions that will be triggered when a specified event occurs. These events are supported: * Beacon enters a region (beacon in range) * Beacon leaves the region (beacon is out of range) * Beacon is near you For each event you can define unlimited number of actions : * Start an application * Open url * Get current location * Broadcast intent action * Set Normal / Silent mode * Execute tasker action (http://tasker.dinglisch.net) for unlimited action possibilities For example, you may set a silent mode entering your bedroom...and set normal sound profile leaving it. Additional information is supplied in the help section of the wiki.
F-DroidGitHub
Beans
APK
Beans is a scratchmap of the world for Android.Keep track of your discovery of the world on a colorful visual map.Color a map of places based on custom labelsCountry/State based coloringSingle/Multi color modesDifferent map projections availableSmall & FastStatistics (WIP)100% Free and Open Source software, with no proprietary dependencies
GitHubIzzyOnDroid
BeatInspector
APK
BeatInspector is meant to help music producers analyze other tracks for remixing, referencing etc. by displaying relevant data about them, namely their BPM, key, genre, time signature, and average loudness. Requires authentication with a Spotify account (Spotify App not required).
GitHubIzzyOnDroid
BeepMe
APK
BeepMe is an app for the conduction of experience sampling (ESM/DES). Once activated the app sends out beeps at random times. You can enter notes, tags and a photo regarding your inner experience at the moment of the beep. This data can then either be used in interviews (DES) or being collected directly (ESM).
F-DroidGitHub
Best-Before
APK
NOTE: App is no longer developed, source repo has been archived. Features: * add, edit and remove products * save best-before date * search through products * data import and export Supported languages: * English * Czech * Danish * Dutch * Finnish * French * German * Hungarian * Polish * Portuguese (BR) * Spanish (AR) * Turkish * Ukrainian Wiki: You have questions, need help to set up the app or simply want to know more about it? Then take a look at the Wiki. Licensing: Licensed under the EUPL-1.2. OpenSource: This app is open source. Many thanks to all contributors. Icons: Icons by Google licensed under Apache License 2.0.
F-Droid
Better Bluetooth device sort
APK
This Xposed module sorts Bluetooth devices by name instead of last connected to get a stable order. Takes effect in the settings app and the media device picker.
GitHubIzzyOnDroid
Better Internet Tiles
APK
NOTE: This app requires shell access, which can be granted using either Shizuku or root. This application aims to create a unified internet quick-settings tile, which is actually useful (I'm looking at you, Android 12). Next to this, separate Wi-Fi and mobile data tiles are also available if you just want to go back to the behaviour of Android 11 or lower. Tapping the new unified internet tile will simply toggle between Wi-Fi and mobile data, which is exactly what I want it to do most of the time. This reduces the amount of taps needed from 3 (tap tile, disable wifi, enable data) to just 1 quick tap. In situations where you still want more control, long pressing the tile will redirect you to the relevant settings page.
F-DroidGitHub
Better Schedule (Bakaláři)
APK
Better Schedule is a faster app for the Bakaláři schedule. For students, by students. I'm a student who got tired of waiting for the official Bakaláři app to load my schedule on a slow school wifi. That's why I created this app. Better schedule remembers your schedule even without internet connection so it can be shown instantly. Simple interface makes it easy to switch between weeks and thanks to persistent notification you don't even need to open the app! Main features: • Very fast schedule loading — Combines offline and online data to display schedule within a second. • Seamless offline mode — Everything is cached in the background so that schedule can be shown even when you are offline. • Persistent notification — You don't have to open the app to see next lesson any more. • Beautiful widget — The next lesson or overview of the entire day always on your home screen. • Simple interface — Easy switching between weeks. • Themes — light, dark or your very own custom theme. • Free and open source software — No ads, no spying, free, forever. Not a fan of the yellow colour? You can change it in the app or use one of the themes at https://vitskalicky.gitlab.io/lepsi-rozvrh/motivy/ The entire app is a free/libre and open source software. If you want to suggest an enhancement, have a look on how it works, or you can code and want to improve the app, head over to GitLab https://gitlab.com/vitSkalicky/lepsi-rozvrh
F-Droid
Better Stundenplan
APK
Features: Week View: Displays the schedule for an entire week. Day View: Displays the schedule for a single day. Detail View: Shows details of individual lessons and allows setting aliases for subjects, teachers, and rooms. Note: This app is only available in German.
F-DroidGitHub
Better Verbose Wi-Fi Logging
APK
This Xposed module makes the verbose Wi-Fi information (enabled in the developer settings) more readable, adds some and hides some useless information.Without the module, it is all one long line that gets wrapped at your screen to make it fit.With the module, it is split into multiple lines: one for the general status info, one for each network. In parentheses, you find the channel number because that is usually more interesting than the frequency itself. Everything that has units now displays those units. What you don't see is that elements that belong together have no break spaces between them so that they are always displayed in one line next to each other.
GitHubIzzyOnDroid
BetterCounter
APK
- Track good and bad habits (eg: exercising, smoking, drinking...) - Track when's the last time you did something (eg: water your plants, change your bedsheets, poop...) - Count your lives in MtG Features: - Records the date and time of each individual counter increase. - Graphs your data over time and calculates statistics. - Lets you export your data (eg: to analyze it with your choice of tools). - Your data is never sent to any server (except for Google's app backup, if enabled). - Simple as hell and will stay this way.
F-DroidGitHub
Bible Lock Screen
APK
Start your day with faith, right from your lock screen! Bible Lock Screen automatically places the daily Bible verse onto your favorite photo, creating a beautiful and personal wallpaper that updates every morning. Transform your phone into a source of daily encouragement and inspiration. HOW IT WORKS 1. Choose Your Photo: Select any image from your gallery to serve as the perfect canvas. 2. Customize the Verse: Use our powerful editor to make the text look exactly how you want. Match the color to your background, choose a font that speaks to you, and position it perfectly. 3. Activate & Enjoy: Turn on the daily automation. The app handles the rest, fetching the new verse and refreshing your wallpaper every morning. You are in complete control. Whether you prefer a minimalist, clean style or a bold, expressive design, Bible Lock Screen gives you the tools to create it. KEY FEATURES - Automatic Daily Updates: Get a fresh Verse of the Day without lifting a finger. - Personalized Backgrounds: Use your own pictures for a truly custom experience. - Full screen widget adjuster: An intuitive, full-screen editor lets you drag to adjust size, width, and vertical position. - Add your own verse - apply custom verse text and references instead of using the "Verse of the Day." - Deep Customization: Fine-tune every detail, including: * Font Style: Modern, Book, Cursive, and more. * Color: Presets and a full color wheel. * Effects: Bold, text shadows, and transparency (alpha) control. - Visual Effects: Add an adjustable background blur to make the text pop. - Multi-Language Support: Available in English, Spanish, German, French, Italian, Slovak, Czech, Hungarian, and Polish. - Modern UI: Built with Material You to seamlessly match your system's style. - Test On-Demand: Instantly apply settings to preview your new look. Download Bible Lock Screen today and keep inspiration just a glance away.
F-DroidGitHubIzzyOnDroid
BikeComputer
APK
BikeComputer A FOSS BikeComputer. Features: - Meassures your speed. - Keep track of your stats. (Distance, Maximum Speed, TravelTime, ...) Alternative to buying a seperate device for your bike.
F-Droid
Bily
APK
Helps to calculate an individual's share on a common receipt shared by multiple people
F-Droid
BinEd - Hex Editor
APK
BinEd is a hex editor tool, which allows to directly browse and edit content of any file or binary data. Features - Visualize data as numerical (hexadecimal) codes and text representation - Codes can be also binary, octal or decimal - Support for Unicode, UTF-8 and other charsets - Insert and overwrite edit modes - Searching for text / hexadecimal code with matches highlighting - Support for undo/redo - Support for files with size up to exabytes (in partial file mode)
F-DroidGitHubIzzyOnDroid
Biometric Bypass
APK
Biometric Bypass is an Xposed module that makes face unlock feel instant by skipping the confirmation step Android enforces after biometric authentication. Even after your face is recognized, Android often shows a "tap to confirm" dialog before letting you through. This module removes that dialog system-wide, so a successful scan unlocks straight away instead of waiting for a second tap. It works by hooking into System UI, so the bypass applies everywhere, including banking and security-sensitive apps that would normally force the extra step. Requirements Android 10 (API 29) or higher An Xposed framework with libxposed API 101 support An AOSP-based or close-to-stock ROM (OEM skins like MIUI or One UI are untested and likely unsupported) A note on security Removing the confirmation step trades a little security for speed. With it enabled, anything that satisfies the biometric sensor, including a spoof or your own face while you are asleep, will unlock without the extra tap. Use it where that tradeoff makes sense for you.
F-DroidGitHubIzzyOnDroid
Birdipedia
APK
Birdpedia is a guide to the birds of the world, comprised of data from leading authorities like eBird/Cornell Lab, BirdLife International, and all the contributors to AviList. This app would not be possible without their work! The birds are presented in alphabetical order by taxon and scientific name. Scroll to view more birds, or filter by name in the filter bar. Click on a bird to view more information about it on eBird. Navigate to settings to change the theme, toggle the display of IUCN Red List markers, or change the region to show birds for.
F-Droid
Birthday Calendar
APK
Get a birthday calendar for all your social networks right inside Google Calendar. Supports Facebook, LinkedIn, Xing, Skype and all other apps which sync contacts with your Android device. Enable reminder alarms and decide which contacts you want to see. You'll get notifications for all of them. Features: * Birthdays and anniversaries for all your contacts * Customizable reminders (same day, one day in advance, ...) and the calendar color * Hide the app icon after setting it up so that it doesn't get in your way * Tablet support Based on https://f-droid.org/packages/org.birthdayadapter.
F-DroidGitHub