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Headi (Headache Diary) is a privacy-friendly app to log your headaches. No data is transferred to any cloud services. All data is stored locally only. Headi also offers a simple analysis of the recorded data. You can also export your logs as a CSV file for further analysis of the data. To save your records you can also export your whole diary, or just parts of it, as a PDF.

Calculate true heading (TH) and ground speed (GS) of an aircraft from given true airspeed (TAS), true course (TC), and wind direction and speed (WD/WS).

This app runs a service that will launch https://f-droid.org/packages/ch.blinkenlights.android.vanilla whenever Android broadcasts a HEADSET_PLUG event. Please note that you need to start the application at least once in order to launch the persistent background service. Also note that the application is useless unless https://f-droid.org/packages/ch.blinkenlights.android.vanilla is installed on your device.

Shows a notification icon in the status bar when headphones are plugged into the phone. Shows a different icon when a headset is attached. Both 3.5mm audio jack devices and USB headphones/headsets are supported. The app aims to be a tiny as possible. No ads, no analytics - just its core functionality. After installation, you have to start the application at least once. Then it will be running as a background service that shows the headset status icon whenever the headphones are plugged in. I wrote the headphone indicator app because I was immensely unsatisfied with apps like (google forced me to remove the name) which are over 2 MiB in size, but 99% of their code is only related to advertisement. Open Source - licensed under the GPLv3+. The source code can be inspected by anyone.

A Powerful Open Source Platform to Manage your Enterprise Android Devices * Quick and Easy to Install “Out of the Box” * Compatible with Most Android Devices * Manages Devices in Closed Private Networks * Premium: All Must-Have MDM Features Scaling of your business requires proper management. The MDM software is a smart manager of your enterprise tablets, smartphones, kiosks, and digital signage systems. It’s particularly useful to manage unattended devices, replacing hours of maintenance work by a few mouse clicks! * Group-based policy management forces hundreds of devices to work in the same way, thus making business processes clearer and easier. * Device status control makes it easy to find problems with enterprise devices and take actions to fix them in a timely manner. * Remote support simplifies the IT manager’s work to resolve issues and correct faults. Headwind MDM requires registration on a Headwind MDM server. You can deploy your own (https://h-mdm.com/download/) or try the demo (https://srv.h-mdm.com). See the Headwind MDM documentation for more information.

Keep track of your medical test records to monitor your progress and become healthier.The project is currently in a beta testing phase. Used it for multiple users and works well enough for daily use, but if you encounter any bugs please report them. I'll try my best to fix them.Features:Allows health test reading data storage for multiple usersBlood Pressure, Blood Sugar/Glucose, Cholesterol, Renal Function Test, Notes can be savedAcceptable range for Blood Glucose (Sugar) reading configurable via slider in settingsGraph view of last 30 readings (for now)No Ads and Tracking (Has no Internet permission)Limited dependencies for reduced binary size. Currently under 8MBTested on Android 6 and up (although only a few devices)Can enable data file backup on every entry to prevent data lossFree and Open SourceDrawbacks:Data is not encrypted on storage. Local SQLite database stores data in json formatCurrently in beta testing state. (Report bugs and UI/UX issues)Some acceptable ranges for some test aren't configurable yetSome (old)keyboards cannot create newline on notes

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

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

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.

A simple heart rate monitor, using the device's camera to attempt to detect a pulse in your finger.

Calculates the required heat sink for an electronic device.

Some vendors of independent vehicle heater allow you to remote control them via simple text messages. This app allows you to send commands like "start" and "stop", as well as querying the device for the current temperature. It should work with Eberspaecher and Webasto heaters, but others might work as well.

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

Helio is a libre music sequencer aimed at hobbyist composers, game developers, and indie artists. Follow the documentation to get started: https://docs.helio.fm

Helsinki Timetables provides Timetables of public transport for Helsinki city and regions, Finland. The app supports the following languages: Languages: eng, fin, rus, fra, esp, est, swe, vie Note: this app requires about 75MB free space on SD-card (sometimes more, when database keeps all timetables from summer and winter periods).

Small app that shows you the current GPS coordinates.

Incarnation of a "match three" style game * 3 different game modes (score race, time attack and 100 seconds) * 3 difficulty settings * slick graphics and musics * online leaderboards to compete with your friends * available in English, French, Deutsch, Italian, Dutch, Spanish

Advanced Web Browser for Power Users, optimized for Lite Apps & Privacy

Hertz contact application provides calculation on static mechanical ball-on-flat contact using materials properties.

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.

Hex is a simple board game where two players race to connect their sides of the board. The winner is the first to build a solid path connecting their two sides. Newer versions of this app use the non-free Google Play Services library.

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.

HexColorTime wallpaper sets the time value hex color as background. Its posible to change the text and some other appareances

HexDroid is a modern, lightweight IRC client for Android that lets you connect to your favourite IRC networks, join channels, chat with friends, and stay up to date with a clean, fast Material Design UI.Features:Multiple network support - connect to several IRC networks simultaneouslyIRCv3 capabilities - message-tags, server-time, echo-message, SASL authentication, and moreTLS/SSL support - secure connections with optional client certificatesAuto-connect and auto-join - automatically connect to networks and join channels on startupSASL authentication - PLAIN, EXTERNAL (client cert), and SCRAM-SHA-256 mechanismsPost-connect commands - run custom commands after connectingCharacter encoding support - auto-detect or manually set encoding (UTF-8, windows-1251, etc.)Nick highlighting and notifications - get notified when someone mentions youChannel and private message loggingIgnore list - filter out unwanted messagesLag indicator - monitor connection qualityClean Material Design 3 interfaceHexDroid is free and open source software, licensed under GPLv3.