Productivity
1843 open source Productivity apps
Healthy Battery Charging
APK
Make your smartphone or tablet battery last longer! Good range to aim for when charging a Li-ion battery is from about 40 to 80 percent in one go. A bunch of tiny charges throughout the day is your second best bet, and going from zero to 100 and then 100 to zero on a regular basis will put the most strain on your lithium-ion battery. Healthy Battery Charging notifies you when to plug or unplug your phone from the charger in order to improve the battery life. The app itself is optimized for low battery consumption, running in the background and checking the battery level every 15 minutes (configurable). The exact timing of these checks depends on the Android OS, which might schedule them alongside other tasks or delay them when in sleep mode. As a result, the battery level may slightly exceed the high threshold while charging or drop slightly below the low threshold while discharging before you receive a notification. For those who want to know more technical details about Li-ion batteries: https://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
F-DroidGitHubIzzyOnDroid
Heart Alert
APK
When your BPM goes out limit BPM, you get sound alert.Warning! This app can run in the background, but your phone may kill it. How to prevent this read here: dontkillmyapp.com.Supported devices:Polar H10Polar H9Polar H7Polar OH1Polar Verity Sense
GitHubIzzyOnDroid
HeartBeat
APK
Simple way to estimate the heart rate. Please do not use it for medical purposes ! This utility works by covering the flash as well as the device's camera with a finger, and waiting for 10 seconds. It works best when the person stays still, and the environment is dark. The phone analyzes the amount of red captured by the camera, and attempts to calculate the heart rate based on the subtle changes it detects. During the measurement, the application shows the current calculation results, and shows the captured data on a line chart. Once completed, the following further details are shown: Standardized values, along with their timestamp (the values are scaled between 0 and 1, and a rolling average is applied for smoothing) Timings where a new heart beat is detected. These data can be shared with other application in order to be exported.
F-DroidGitHub
HeartRateMonitor
APK
A simple heart rate monitor, using the device's camera to attempt to detect a pulse in your finger.
F-DroidGitHub
HeatCalc
APK
Calculates the required heat sink for an electronic device.
F-Droid
HeliBoard
APK
HeliBoard is a privacy-conscious open-source keyboard, based on AOSP / OpenBoard. Does not use internet permission, and thus is 100% offline. Features: Add dictionaries for suggestions and spell check build your own, or get them here, or in the experimental section (quality may vary) additional dictionaries for emojis or scientific symbols can be used to provide suggestions (similar to "emoji search") note that for Korean layouts, suggestions only work using this dictionary, the tools in the dictionary repository are not able to create working dictionaries Customize keyboard themes (style, colors and background image) can follow the system's day/night setting on Android 10+ (and on some versions of Android 9) can follow dynamic colors for Android 12+ Customize keyboard layouts (only available when disabling use system languages) Customize special layouts, like symbols, number, or functional key layout Multilingual typing Glide typing (only with closed source library ☹️) library not included in the app, as there is no compatible open source library available can be extracted from GApps packages ("swypelibs"), or downloaded here (click on the file and then "raw" or the tiny download button) Clipboard history One-handed mode Split keyboard (only available if the screen is large enough) Number pad Backup and restore your settings and learned word / history data
F-DroidGitHubIzzyOnDroid
Heliodos
APK
Heliodos is an augmented reality (AR) app that overlays the sun's trajectory onto your live camera feed, so you can see exactly where sunlight will fall at any time of year — right through your phone's viewfinder. Stand in your garden, on a building plot, or any outdoor space, point your camera at the sky, and instantly see the sun's arc for the summer solstice, winter solstice, equinox, and the current date and time — including any obstacles in the sun's path. Features AR sun trajectories: The sun's path for the solstices, the equinox, and the current moment are drawn directly over the live camera image. Flexible location: Uses your GPS location automatically, or lets you set any place on Earth manually. Custom time: Simulate the sun's position at any time of day, not just right now. Camera selection: Pinch to zoom to cycle through available back cameras (wide-angle, normal, telephoto). Use cases Gardening: Find out which spots get full sun in summer versus winter before you plant. Real estate: Check how much natural light a room or terrace receives throughout the year. Architecture & construction: Plan shading, windows, and solar panels with real-world sun data. Photography: Scout locations and predict golden-hour angles in advance. Heliodos requires camera and location permissions to function. No data is collected or transmitted.
F-DroidGitHub
Hertz contact
APK
Hertz contact application provides calculation on static mechanical ball-on-flat contact using materials properties.
F-Droid
Het Saldo
APK
Het Saldo is a De Lijn "smart"card saldo checker. It allows you to easily keep track of the remaining trips on your De Lijn tickets. The app lets you add multiple tickets and syncs their status and remaining balance for you to check.
F-Droid
Hex Launcher
APK
Hex Launcher is a minimalist, performant, private, and open-source home screen replacement. Minimalist: Hex Launcher is optimized to bring the app you want directly to your thumb. Nothing more, nothing less. Performant: Hex Launcher was written from the ground up to be as small and fast as possible. It will not drain your battery, and it will not leave you waiting. Private: Hex Launcher does not track you. It contains no ads, and no analytics of any kind. It can't even connect to the internet. If you want privacy, you will find it with Hex Launcher. Open Source: Hex Launcher is designed and maintained by one person, with a commitment towards being open and accepting feedback. The source is available on Github at https://github.com/MrMannWood/launcher Make Your Phone Work For You Hex Launcher was designed to get you into your apps as quickly as possible, and to prevent you from mindlessly looking for a new way to doom scroll. It provides a search-first UI that puts your results directly under your thumb, and allows you to set up six apps for fast access with gestures. Take Back Your Privacy Hex Launcher does not contain trackers, analytics, or data gathering mechanisms; it can't even connect to the internet. With Hex Launcher, what happens on your home screen stays on your phone. If you want to help the developer, you can choose to enable on device logging and provide bug reports via email. These options are off by default. Your phone and your data are yours.
F-DroidGitHub
HiddenProtectedWorkProfile
APK
HiddenProtectedWorkProfile is copy of ProtectedWorkProfile app, which, unlike original, is hidden in work profile and launched via notification. Since app hides all other apps when screen turns off, hiding itself leads to hiding entire profile from launcher. This app creates work profile that will be frozen (encryption keys will be evicted from RAM) and that hide apps when your screen turns off. This app not visible in profile.
F-DroidGitHub
HiddenSettings
APK
HiddenSettings is an activity manager that helps you access Androidsettings and activities your ROM or launcher doesn’t expose.Features:- Search all available activities- Add, rename, and delete favorites- Import and export favorites⚠️ Note: Hidden settings vary by ROM. The app comes unconfigured;you can build your own favorites list or import one.
IzzyOnDroid
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Hide "running in the background" Notification
APK
Hide the annoying "running in the background" notification with this simple and small app. Just keep it installed and this annoying notification will never appear again. You can choose for which app this notification should be hidden.
F-DroidGitHub
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HideMockLocation
APK
This module prevents detection of mock location on Android 6 or higher. If you are using LSPosed, you need to enable it for each app it should cover.
GitHubIzzyOnDroid
Hidroly
APK
Hidroly is a minimalist and powerful hydration tracker designed to help you meet your daily water goals without distractions. Whether you use metric or imperial units, Hidroly makes it simple to stay on track. 🏁 Simple and Quick Setup Start using the app in seconds with an intuitive onboarding flow. Choose your preferred units and set your daily goal effortlessly. 🕐 Smart Notifications Get hydration reminders only when you’re active. Notifications dismiss automatically after logging water and respect your wake-up and sleep times. 📊 Daily Progress and History View your current day’s intake in a clear timeline, and easily revisit or edit previous days. 📈 Summary Page Track your overall progress with insights such as current streak, best streak, average intake, total intake, and a weekly intake chart. ⚙️ Fully Customizable • Set your own daily water goal • Choose between metric (kg, ml) or imperial (lb, oz) units • Define a custom sleep schedule • Add and rearrange your own cup sizes for quick logging 📡 Offline and Private Your data is stored locally on your device. No accounts, no tracking, no internet required. ✨ Minimalist and Accessible Interface A clean, distraction-free design focused on what matters: your hydration. Features haptic feedback and accessibility support for an inclusive experience.
F-DroidGitHubIzzyOnDroid
Hidroly: Water Reminder
APK
Hidroly is a friendly, open-source water reminder designed for those who want to build healthy habits without the clutter. Built with a beautiful Material 3 interface, it offers a clean and modern experience that fits perfectly on your device and an intuitive flow. Smart and Personalized Don't worry about the math. Hidroly calculates your ideal daily intake based on your weight and age, creating a personalized goal just for you. Whether you prefer metric or imperial units, the app adapts to your lifestyle. Intelligent Reminders Receive timely notifications throughout the day to keep you on track. The best part? Hidroly respects your rest. Reminders are automatically paused during your sleep hours, ensuring you only get notified when it matters. Total Control in Your Hands Log your water intake with custom cup sizes that match your routine. Made a mistake? No problem. You have full control to delete past entries and review your history whenever you need. Insights to Keep You Motivated Visualize your progress through sleek charts and summaries. Track your weekly, monthly, and yearly trends, monitor your streaks, and see your averages to understand your hydration habits at a glance. Privacy by Design Your data is yours alone. Hidroly works entirely offline and stores all information locally on your device. No accounts, no tracking, and no unnecessary noise. Just you and your hydration goals. Download Hidroly and start reaching your goals today!
F-DroidGitHubIzzyOnDroid
Holey Light
APK
100% Free - 100% GPLv3 Open Source - No ads - No tracking - No nags - Optional donationHoley Light is a LED emulation app. It animates the edges of the camera cut-out (AKA punch-hole) as replacement for the sadly missing LED on many modern devices.Additionally, it provides a notification display for when the screen is "off", replacing - or working in conjunction with - the Always-On Display feature. As this display is not around the camera hole, it is aptly named the Unholey Light.Supports all Samsung devices with in-screen camera hole, and several Google Pixels.FeaturesEmulates notification LEDFour different display modes: Swirl, Blink, Pie, Unholey LightConfigurable animation size, position, and speedCustomizable color for each notification channelSelects initial notification color by analyzing dominant color of app iconDisplays during screen "off", sub-1% battery use per hour in Unholey Light modeSeparate configuration modes for different power and screen statesAbility to mark notifications as seen based on various triggersRespects Do-Not-Disturb and AOD schedulesCan hide AOD completely, partially, and/or keep the clock visibleSetupInitial setup can be a bit tricky for a first-time user, but a setup wizard is included that guides you through the process.PermissionsThis app absolutely requires several permissions to be able to function. If you are concerned about that, you can always check out the source code (or not use the app).Accessibility: the app needs an accessibility service to render the emulated LED on-screen, and track the correct position to display in screen "off" mode.Notifications: a notification service is needed to be able to know about the notifications before we can show themCompanion device: in a weird quirk of Android, this permission is required to be able to read the wanted LED color of notificationsBattery optimization exemption: without this, Android would randomly disappear our emulated LEDForeground service: both an accessibility and notification service are used as described aboveWake lock: you decide when and how the app draws on the screen, sometimes this requires making sure the CPU isn’t sleepingAll package access: we render other app’s icons and access some of their base information to be able to differentiate different notifications from each-other
GitHubIzzyOnDroid
Home Assistant
APKDesktopWeb
Open-source home automation platform with local control and privacy-first design.
F-DroidGitHub
Home Medkit
APK
Home Medkit The application provides a simple and convenient way to add and store data about medications taken. Features * Automatically add medications by scanning codes. * Cloud synchronization of the list of medicines. * The ability to manually add medications. * Update the information about the medicine if the scan was performed without an internet connection. * Adding images of medicines. * Sorting of medicines by expiration dates. * Grouping of medicines by categories. * Sound notification of the need to take medicine. * Display of the nearest medication schedule. * Reminder of the expiration date of medicines. * The ability to export and import databases to other devices. The application provides the ability to monitor the expiration dates of medicines, schedule their intake and receive reminders. It is an indispensable assistant that will help you keep abreast of your health.
F-DroidGitHubIzzyOnDroid
HomeBot
APK
HomeBot enables you to remap the home button long press on you smartphone. You can set the following: * Opening an app * Opening a web page * Toggling the flashlight * Opening the recent apps screen * Toggling brightness The app doesn't need root but has to be set as your Assistant app in Settings > Apps > Advanced > Default apps > Assist & voice input
F-DroidGitHub
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Hoplite Polytonic Greek Keyboard
APK
A keyboard extension which allows the user to type in Polytonic Greek.
F-DroidGitHub
Horizon Kernel Flasher
APK
Horizon Kernel Flasher is a simple app that can flash AnyKernel flashable ZIPs on Android.
GitHubIzzyOnDroid
Hrm
APK
Simple bluetooth low-energy heart rate monitor with a stopwatch function to time your workouts. Automatically connects to your last-used peripheral or you can scan for nearby bluetooth devices.
F-Droid
Hydra
APK
With Hydra you are always up-to-date on the latest news and activities of your favourite student association. Listen to Urgent.fm, read Schamper articles or decide if today's menu of the student restaurant is to your liking. Or go study and check if your favourite library is open today. Wherever you are, with Hydra you have access to Ghent University.
F-DroidGitHub