Calendar
284 open source Calendar apps
S
Stocks Widget
APK
Widget that shows your stock portolio in a resizable grid. You can sort the list by drag-and-drop and the list can be exported and re-imported. Features: * Completely resizable, it will fit the number columns base on the width you set. * Scrollable, so you don't have to worry about adding more widgets * Stocks are sorted by change in percent (descending), or you can rearrange them yourself * You can set custom refresh intervals and start/end times * You can import and export your portfolio from a json or textfile * Add multiple portfolios to multiple widgets * View recent news for your tracked symbols * View graphs for your tracked symbols * Notification alerts for your followed symbols
F-DroidGitHub
Streak Alarm for Snapchat (Streak Reminder)
APK
Reminds you to keep streaks by firing notification at user-defined intervals. Only works if you have friends. This is my first app project! Features: * Custom reminder interval from 1 to 22 hours * Notification stays until streaks are sent so you won't miss it * Snooze reminder for custom amount of time * Mark streaks sent (also directly in notification) * Mark streaks sent some time earlier * Open Snapchat (also in notification) * Automatically disable notifications if ignored for long time * Drop me an email if you have any suggestions!
F-DroidGitHub
StudiPassau
APK
This app offers the following functions: » A complete timetable » Mensa plan with data from STWNO or OpenMensa » Files view » Room finder » News Many functions are still in planning/development. The entire app is open source: https://github.com/ThexXTURBOXx/studipassau Created and still maintained by a former student of the University of Passau.
F-DroidGitHub
Sun Time
APK
When the sun is at the highest point, it's noon, so it's 12:00 p.m., right? That's the way things should be. This app shows you the solar time at your location. 12:00 p.m. is natural solar noon, and the sun is at its highest point. 12:00 a.m. is the natural solar midnight, and the sun is at its lowest point. See solar time in comparison to your zone time in the main app, and see the solar time in a nifty widget. You can use this app to wake up at a solar time of your choosing.
F-Droid
Suntimes
APK
Tracks sunlight and moonlight times. Features a clock, alarm clock, widget collection, and more. Suntimes displays rising/setting information for the sun and moon. It includes many features commonly associated with a world clock. The times reported by this app are approximate. The app doesn't require network connectivity, GPS is optional. Features: * clock * alarm clock * widgets * tiles Clock * current time (System, Apparent Solar, Local Mean, UTC, or Sidereal time). * time of sunrise, sunset, twilights (civil, nautical, astronomical), and blue/golden hour. * time of moonrise, moonset, apogee/perigee, moon phases and illumination. * time of solstices, equinoxes, and cross-quarter days. * day/night world map, yearly sunlight, and sun altitude graphs. Alarm Clock: * general purpose alarms; full screen alarms, notifications, and quick notifications. * daily repeating alarms for sunrise, sunset, or other reoccurring events. * bedtime alarms with support for sleep cycles and do-not-disturb settings. * gentle alarms that gradually change screen brightness, colors, and volume. * features for heavy sleepers; math problems, NFC tags (requires SuntimesNFC), and snooze limits. * automated actions; user-defined intents when alarms are triggered or dismissed. * other alarms; "roman time" alarms (Natural Hour), midpoint alarms (Interval Midpoints). The app benefits from the following permissions: * ACCESS_FINE_LOCATION is used to obtain the current position (latitude, longitude, altitude). * ACCESS_LOCATION_EXTRA_COMMANDS is used to configure GPS hardware. * ACCESS_NOTIFICATION_POLICY is used to change do-not-disturb settings at Bedtime. * BOOT_COMPLETED is used to restore active alarms after a reboot. * FOREGROUND_SERVICE is used to deliver alarms.. * POST_NOTIFICATIONS is used to deliver alarms.. * REQUEST_IGNORE_BATTERY_OPTIMIZATIONS is used to ensure reliable delivery of alarms. * SCHEDULE_EXACT_ALARM is used to schedule alarms.. * SET_ALARM is used to interact with the system AlarmClock app. * USE_FULL_SCREEN_INTENT is used to deliver alarms.. * QUERY_ALL_PACKAGES is used to configure and launch user-defined actions.. * VIBRATE is used by alarm notifications. With older devices: * READ_EXTERNAL_STORAGE is used to play alarm sounds located on the SD card (api≤=18 only). * WRITE_EXTERNAL_STORAGE is used to backup data to file (places, themes, etc) (api≤=18 only). Note: The "Calendar Integration" and permissions added in v0.9.0 were removed in v0.10.0. This feature is now available as a separate add-on app; Suntimes Calendars. Visit https://forrestguice.codeberg.page/Suntimes/ for more information.
F-DroidGitHub
Suntimes Calendars
APK
Provides calendar events for the solstices, equinoxes, twilight periods (astronomical, nautical, civil (sunrise, sunset)), and the moon (moonrise, moonset, major phases, apogee, perigee). This add-on for Suntimes adds events to the Calendar app. It depends on Suntimes v0.10.3 or later. The following permissions are required: * WRITE_SYNC_SETTINGS is used to create and add custom calendars to the Calendar app. * WRITE_CALENDAR is used to populate custom calendars with events. * suntimes.permission.READ_CALCULATOR is used to read data from the Suntimes provider.
F-DroidGitHub
Super Productivity
APK
Organize your daily tasks at one place while making time tracking a lot less annoying. Super Productivity is a ToDo List / Time Tracker / Personal Jira Task Manager for multiple platforms. Features Plan, track & summarize. Create time sheets and work summaries in a breeze to easily export them to your companies time tracking system. Integrate with Jira, Github and Gitlab. Auto import tasks assigned to you, plan the details locally, automatically create worklogs and get notified right away, when somfething changes. Organize your project's data. Create notes, attach files or create bookmarks for links, files and even commands and have it all out of the way, once you're ready for the weekend. Helps you to establish healthy habits. A break timer reminds to you, when it's time to step away. You also can collect personal metrics for yourself to see, which of your work routines need adjustments. Stuck and procrastinating? No problem! Super Productivity's anti procrastination feature helps you to reconsider your options and a pomodoro timer is also always at hand. Super Productivity does NOT actively collect any data and there are no user accounts or registration. It's free and open-source and always will be. NOTE: There will however be data loaded from app.super-productivity.com on app start and if you use one of the third party providers, you will have to comply with their private policy. Private Policy
F-DroidGitHub
Swatch .beat clock
APK
Are you tired of the boring old 24-hour format? Could you use some change in your life? Let me introduce you to the Swatch Internet Time format! Instead of dividing the day into 24 hours, it divides it into 1000 .beat's. 6:00 AM becomes "@250", 11:27 PM becomes "@977" and so on! In addition to that, there are no timezones in Internet Time. It's the same all over the world. It's based on Biel Mean Time (BMT), similar to Central European Time (CET). Of course, getting used to this new format might not be easy, and even when you learn it, you will still need a .beat clock. That's where the Swatch .beat clock app comes into place. With a handy converter and a fully functional digital clock, it will help you through your journey. Read more about Internet Time on Wikipedia.
F-Droid
T CrB Detector
APK
T CrB Detector notifies the user when the star T Coronae Borealis has exploded, and it also displays the current magnitude of the star at any moment. It is perfect for stargazers who are waiting patiently for this explosion.
F-DroidGitHub
TKWeek
APK
Do you need to convert between a week number and a date or require some information about a date? Find out if a year is a leap year, calculate the number of days, business days, weeks, weekends, month turns and years between two dates? Want to add or subtract days, weeks or months to a given date? With TKWeek, it‘s no hassle. Even a basic calendar view is at your fingertips. You can use it to flag days off. Just tap and hold until the color changes. And with My Day you see what is up on a particular day. Curious to know when Friday 13th takes place? TKWeek will tell you. The app has many national and international public holidays built in, for example Reformation Day, St. Martin's Day, Christmas, Good Friday, Seven Sleepers Day, Pentecost, Ash Wednesday, and Easter. Some of the other special days TKWeek knows: Ice Saints, Valentine's Day, Mother's Day, Halloween, St. Patrick's Day, Earth Day, All Saints. And there are so many more included.
F-DroidGitHub
Tacere
APK
Automatically silence the phone whenever there is an active event or meeting in the calendar. It includes support to: * Silence during events marked as "free" or "available". * Silence during all day events. * Automatically silence all calendar events or choose specific events to silence. * View upcoming events. * Change your settings for each event. * Schedule a different ringer state for each instance of a repeating event. * Automatically adjust media and alarm volumes if desired.
F-DroidGitHub
Tactile Clock
APK
This Android app vibrates the current time when the display is locked and you double-click the power button of your device. How it works Double-click the power button. This might take some practice to work reliably. Press slowly and deliberately. If you double-click too fast the system only recognizes a single click and turns the screen on instead. The time vibration is structured as follows: A short vibration stands for the digit 1 and a long one for the digit 5. The 2 is represented by two consecutive short vibrations, the 6 by a long and a short one and so on. The 0 constitutes an exception with two long vibrations. Examples: 00:00 = -- -- 01:18 = . . -... 02:51 = .. - . 10:11 = . -- . . 19:06 = . -.... -. Explanation: The time is processed digit by digit: . = short vibration - = long vibration Leading zeros in the hour and minute fields are omitted. Gaps: To simplify the recognition of the vibration pattern, there exist three kind of gaps with different durations: []: A short gap between vibrations in the same digit [ ]: A medium gap for the separation of two digits within the hour and minute field [ ]: A long gap to split hours and minutes Additional features Keep informed about the current time. The app can vibrate the current time automatically every X minutes or every hour. Play the Greenwich Time Signal at the start of each hour, similar to a radio station. Trigger time vibration with Tasker (see below for details) Decide what to do if you double-click when the display is on. You can choose between a warning vibration and having the time vibrated as well. The app starts automatically after the system reboots. Double-click conflict TactileClock is triggered by clicking the power button twice in quick succession. This may conflict with the 'built-in' double-click action of your Android device. For example, a Google Pixel device will typically launch the camera when the power button is double-clicked; a Samsung device may take a screenshot when the power button is double-clicked. If your device has a 'built-in' action when the power button is double-clicked, there are three options to get TactileClock working. Option 1: Disable the 'built-in' double-click action of your device. Google Pixel: (Settings > System > Gestures > Quickly open camera) Samsung Galaxy: (Settings > Advanced Features > Side Button > Double Press) Other devices may require different settings to disable the double-click action. Once the 'built-in' double-click action has been disabled, double-clicking the power button will trigger the TactileClock action. Option 2: Configure TactileClock to trigger after a long double-click. This will allow the 'built-in' double-click action to co-exist with the TactileClock double-click action. 1. Open TactileClock 2. Swipe left to show the 'Shortcut' screen. 3. Modify the 'Click Interval:'. 3a. Set 'From:' to be 500ms. 3b. Set 'To:' to be 1500ms. The From: and To: values specified above should work, but may need to be adjusted for optimal results on your device. Once configured, a fast double-click will trigger your devices 'built-in' action, while a slow double-click will trigger the TactileClock action. Option 3: Use Tasker to trigger time vibration with custom events Use
GitHubIzzyOnDroid
Task Manager
APK
An application to add your daily tasks and track them as you progress. features: - add tasks for any date - add as many notes for any task - mark tasks done as you complete them
F-DroidGitHubIzzyOnDroid
Tasks.org: Open-source To-Do Lists & Reminders
APK
Tasks is libre open-source software, based on the original source code from the popular Astrid Tasks & To Do List! Tasks can be used entirely offline, or synchronized with Google Tasks, CalDAV, or EteSync. It is your data, you should get to choose where it is stored! * Nested subtasks with unlimited depth * Powerful repeating task options * End-to-end encryption with EteSync * List sharing available when synchronized with CalDAV or EteSync * Location-based arrival and departure notifications * Tag, filter, and search your tasks * Drag and drop manual sorting for Google Tasks * Customize your lists with different icons and colors * Hide tasks until a later date * Automatically add tasks to your calendar * Create new tasks and list reminders with Tasker * And much more! Tasks respects your privacy! - No advertisements - No ad or location tracking - Opt-out of crash reporting and anonymous statistics - Developer has no access to your data under any circumstances In order to support development some features require a subscription - 7-day free trial - Choose your subscription price, starting at $1 per year Documentation available at https://tasks.org Source code available at https://github.com/tasks Contact support@tasks.org for help
F-DroidGitHub
Taskwarrior
APK
* Project is not affiliated with the authors of Taskwarrior, but original task binary is embedded into Android application * Because Android application uses task binary for all manipulations with tasks, in general, you can expect exactly same behaviour with original Taskwarrior * Synchronisation with taskd server works! See https://bitbucket.org/kvorobyev/taskwarriorandroid/wiki/Configuration for more information Following task features are implemented already: * See your tasks using reports * Add, edit, start, stop, delete tasks * Annotate and de-annotate * Run custom search queries * Undo your changes * Run custom task commands * Synchronisation with taskd Features below are unique to Android version: * Create shortcuts to reports and new task templates to Home screen * Multiple profiles support * Auto-syncronisation by configurable intervals Following features are not implemented at present moment: * UDAs * Dependencies You can reach developer on Freenode IRC #taskwarrior channel, nickname: kvj
F-Droid
Tasky
APK
Tasky is a highly intuitive and easy-to-use todo list application designed for those who seek a powerful yet minimalistic way to manage their daily tasks.Features ⭐️:Modern and minimal designNotifications for tasksMaterial You Dynamic themingRepeating tasksCool task completion animationAdd and Delete SoundsCompletely offline making it privacy firstFree and Open SourceOffline BackupsTasky is a simple todo list app which offers tasks with reminders that helps you remember your tasks and eliminate the concern of forgetting your tasks.Also with the help of repeating tasks or reminders, it makes it easy to form habits by getting notifications everyday about a specified task.With it's minimalistic design and no extra bells and whistles, you can keep organizing your day distraction free.
GitHubIzzyOnDroid
Taswast
APK
Taswast is an Amazigh calendar. Counts days/months/years with the amazigh system and repertorying all the traditional events of the year.
F-Droid
Tempus Romanum
APK
Tempus Romanum provides a simple tool to generate dates in latin format. You can also add a widget to see the date of the day in latin on your homescreen.
F-DroidGitHub
Terminightor
APK
A simple alarm clock with a spicy special: In order to put off an alarm, you have to hold a NFC tag onto your phone. Unless you do that the alarm will not stop, even if you try to kill the Terminightor service. So if you put a tag for example into your bathroom, and set up an alarm with that tag, it will ensure that you really get up in the morning. Features: * repeat/don't repeat alarms * repeat alarms only on certain week days * custom ring-tone * put vibration on/off * put alarms off via NFC tag
F-Droid
T
Tickmate
APK
Tickmate is basically a one bit journal. For each day, you can specify whether something occurred or not. The occurrences can be arbitrary things, like flossing your teeth or having a drink. You are able to quantify your habits and the accumulated data can be displayed for the past weeks or months to track changes over time. This way, it may help you to get over your old habits or embody new ones.
F-DroidGitHub
Time Clock
APK
This app allows you to keep track of different activities that you do during the day. Over time, as use continues, you can analyze how much time you spend during the days, weeks, and months doing different things. Use this app to: * Improve your time management skills * Improve task and activity estimates * Take control of when and what you're spending your time doing
F-DroidGitHub
Time Cop
APK
- Offline-only, mobile-first - For Android, iOS, and Linux - Fully private—there is no tracking / spying / advertising / etc - Keep track of tasks with multiple parallel timers that can be started with the tap of a button - Associate timers with projects to group your work (or don't) - Start, stop, edit, and delete timers whenever with no fuss - Export data as a .csv file, filtered by time-spans and projects - Export the app's database for full access to all of its data - Automatic light mode / dark mode based on your device settings - Localized in several languages (thanks to Google Translate): English, Arabic, German, Spanish, French, Hindi, Indonesian, Japanese, Korean, Portuguese, Russian, Chinese (Simplified), and Chinese (Traditional), as well as Italian, Czech, Norwegian, and Indonesian (via contributors) - Open source (licensed under Apache-2.0)—fork away (https://github.com/hamaluik/timecop)
F-DroidGitHub
TimeLimit.io
APK
Flexible Apps are grouped to categories (a category can contain one or multiple App). You can chose per category at which times it should be allowed. This allows preventing playing games too late. Additionally, you can configure time limit rules. These rules limit the total usage duration at one day or over multiple days (e.g. a weekend). It is possible to combine both, e.g. 2 hours per week end day, but in total only 3 hours. Moreover, there is the possibility to set an extra time. This allows using something longer than regulary once. This can be used as bonus. There is additionally the option to disable all time limits temporarily (e.g. for the whole day or an hour). Multi user support There is the scenario that one device is used by exactly one user. However, with tablets, there are often multiple possible users. Due to that, it is possible to create multiple user profiles in TimeLimit. Each user has got different settings and time counters. There are two kinds of users: parents and children. If a parent was chosen as user, then there are no restrictions. Parents can chose any other user as current user. Children can only chose themselves as current user. Multi device support There are scenarios in which one user has got multiple devices. Instead of time limits per device and splitting the limits across the devices, it is possible to assign one user to multiple devices. Then the usage durations are counted together and allowing an App automatically affects all devices. Depending on the settings, only one device per time can be used or multiple devices at the same time. However, un the second case, it is possible to use more time than available e.g. at connection interruptions. Connected It is possible to view and change settings from any linked device. This connection is possible - if wanted - using your server. Notes Some features cost money if you don't use your own server. These features cost 1 € per month/ 10 € per year (in Germany). TimeLimit does not work good at some smartphone brands (mostly Huawei and Wiko). With the correct settings, it can work better. But better is not good. If it "does not work": This can be caused by power saving features. You can find at https://dontkillmyapp.com/ how you can disable these features. Get in touch with the support if that does not help. TimeLimit uses the permission for the usage stats access. This is only used to detect the currently used App. Based on the currently used App, the App is blocked, allowed, or the remaining time is calculated. The device admin permission is used to detect an uninstallation of TimeLimit. TimeLimit uses the notification access to block notifications of blocked apps and to count and block background playback. Notifications and their contents are not saved. TimeLimit uses an accessibility service to press the home button before showing the lock screen. This fixes blocking in some cases. Moreover, this allows opening the lockscreen at newer Android versions. TimeLimit uses the permission "draw over other Apps" to allow opening the lockscreen at newer android versions and to overlay blocked Apps until the lockscreen is launched. TimeLimit uses the location access to detect the used WiFi network and allow/ block Apps depending on it and your settings. The location access is not used otherwise. If the connected mode is used, then TimeLimit may transmit the usage durations and - if enabled - the installed Apps to the parent user.
F-Droid
TimePlanner
APK
Time Planner is an application for convenient scheduling and tracking of daily tasks. 📱The application supports: - Convenient division of tasks by priority, categories and subcategories 🔥 - Scheduled alerts about the start of events ⏰ - Built-in notes for tasks 📌 - Templates for everyday tasks 🏃 - Automatic repetition of template tasks 🔁 - Protection against erroneous task overlap 📐 - Maintaining analytics and statistics 📊 - Backup and transfer of data 💾 - More than 10 different color themes 🎨 - 6 languages 🌍
F-DroidGitHubIzzyOnDroid