Calendar
284 open source Calendar apps
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ShiftCal
APK
ShiftCal A FOSS Shift Calendar. Features: - Create your Shifts - Set an Alarm for the Shifts - Enable DoNotDisturb while Working - Select individual colors - View them in the calendar - Simple material design
F-Droid
Shorey
APK
Shorey is a simple note app which is built with Flutter 2 and supports both Android/iOS platforms. It provides me full experience of interacting with Flutter and in the meantime I hope it can be your knowledge/memory transition tool, and yes, there still much work to do. Features: * Google Material UI * Lightweight, only 10mb * Retrospect everyday to organize information faster * Concise note-taking * Set the mantra to inspire yourself * Set the main goal to stay focus * Keep track of the Heat map * Supports simple Chinese and English
F-DroidGitHub
Simple Deadlines
APK
A simple and easily readable deadline manager. A daily notification allows you to organise your day. It is aimed towards simplicity and is very lightweight.
F-DroidGitHub
Simple Time Tracker
APK
Simple Time Tracker helps you track how much time you spend during the day on different activities. Start new activities with one click. View previous records and statistics over time. The app is free and open source. Also widgets, backups, notifications and dark mode. Also supports watches with Wear OS and has complication. • Simple interface App has a minimalistic interface that is very easy to use. • Widgets Track your activities directly from your home screen. • Works offline and respects your privacy App doesn't require an Internet connection or account registration. Your data never leaves your phone. Neither the developers nor any third-parties have access to it. • Free and open source There are no advertisements, in-app purchases or intrusive permissions. The complete source code is also available.
F-DroidGitHubIzzyOnDroid
SimpleReminder
APK
Something to remember crosses your mind and an alarm or a note is the best solution you know of? Then you haven't tried SimpleReminder yet! This app lets you set up a scheduled reminder in very few steps: 1. Click "Add Reminder" on your home screen or use the Quick Settings Tile 2. Enter a message and select a time (and date) 3. Click OK A notification with your message will pop up at the time selected! Features • Use the specific launcher icon or the Quick Settings tile (Android 7.0+) to directly reach the "Add Reminder" dialog • Easily add a reminder within the next 24 hours by using just a clock widget • Choose a custom date for a reminder with "+"/"-" buttons or in a calendar • When a reminder is due, a notification is shown (customizable via notification settings) • Clear breakdown on due, upcoming and past reminders • Reschedule or edit a reminder by clicking on the notification or its entry in the list • Nagging reminders: repeat notifications in a given interval until dismissed See the website for many more planned features!
F-DroidGitHub
SkillApp
APK
SkillApp is a simple skill tracker that doesn't clutter your mind with unnecessary features, allowing you to focus entirely on your productivity. The app does not collect your data, does not connect to the internet, and does not contain ads. Features: • Completely offline: the app doesn't even have the INTERNET permission • Organize related skills into groups • Various measurement units: Hours, Kilometers, Times, Pages, Reps, Steps, Calories • Set your goals and achieve them • See your productivity at a glance with statistics • Local backup into a folder of your choosing • Stay productive at any time of day with the Dark mode
F-DroidGitHub
Sleep Timer
APK
Sleep Timer helps you fall asleep while listening to music or podcasts. When the timer stops, audio playback is gradually lowered then paused. 1. Add the Tile in the Quick Settings panel. 2. Tap the Tile to start a timer. 3. Extend, reduce or cancel the timer with the notification actions. Note: Don't look for a launcher icon, this app only provides a Quick Settings Tile. Open Source project hosted on GitHub: https://github.com/SimonMarquis/SleepTimer
F-DroidGitHubIzzyOnDroid
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SleepTimer
APK
SleepTimer is a timer, like the ones in TVs an Hifi systems. After a specified time the devices standby mode is activated, as if the power button was shortly touched. It doesn't matter if a video or audio stream is played or another app tries to prevent the standby mode. Reactivating is possible by a short press of the power button. Features: - permanent notification showing the remaining time until standby - possibility to use Androids quick settings for pausing and resuming a countdown
F-Droid
Smoke Reducer
APK
First of all Smoke reducer (and stopper) records the distance between two times you are smoking. Then, it lengthens that time between each cigarette by telling you when to smoke. If you click the Sleep button, the time that you sleep isn't counted to the time between each alarm
F-Droid
Snaptick
APK
Introducing Snaptick: Your Simple and Free Daily Task Planner!Snaptick is a user-friendly app designed to boost your productivity by helping you organize and achieve your daily plans effortlessly. With a clean and easy-to-use interface, this app offers essential features like task creation and editing, task prioritization, a built-in Pomodoro Timer, sorting options, task analysis, and reminder notifications.FeaturesCreate and Edit TasksPomodoro TimerManage Task PrioritySort TasksShow Free TimeTask AnalysisReminder NotificationsAd-Free Task ManagementDownload Snaptick now and simplify your daily planning. Boost your productivity with a clutter-free, ad-free, and efficient task planner that adapts to your unique style. Start your journey to increased productivity today!
GitHubIzzyOnDroid
Snow
APK
Snow is a simple, beautiful, no non-sense, cross-platform mobile app which gives reminders about upcoming programming contests. It supports 10+ platforms including codeforces, hackerrank, hackerearth etc.Features:View upcoming and ongoing contests from supported platforms10+ supported platforms, including At Coder, Codeforeces, Hacker Earth etc.Favorite a contest to receive reminders before its start timeDynamic, Dark, and Light theme supportBeautifully designed with Material3 (You) design specPrivacy focused as all data is stored on deviceEasy registrations: tap a contest's name to directly open its webpageChoose a custom accent color and express yourselfIf you're running version 1.3.0 or a prior one, you will have to uninstall the old version and install the new version, as the signing key changed (see https://github.com/sahej-dev/Snow/issues/13). Apologies for the inconvenience!
F-DroidGitHubIzzyOnDroid
Sobriety
APK
Track your addictions and maintain sobriety! Sobriety, the free and open source addiction tracker, is designed to be simple: You input a starting date and time, as well as a name for the addiction, and it tells you how long it's been since you last logged a relapse. You can keep notes on your recovery, track milestones, log how much time or money (or anything else) you're saving by staying sober, and view your relapse history all from one easy to use app.
F-DroidGitHub
Spickerrr
APK
A party conference is coming up and you don't want to have to constantly search for motions in the wiki? Then the Spickerrr is just right for you. Icon partially made by flaticon.com/authors/madebyoliver from www.flaticon.com
F-DroidGitHub
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
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 an app, alarm clock, and widget collection. Suntimes displays sunrise and sunset, twilight (civil / nautical / astronomical), blue and golden hour, the solstices and equinoxes, moonrise and moonset, moon phases and illumination. The alarm clock schedules daily repeating alarms (or notifications) for sunrise, sunset, and other events. The app 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. The app benefits from the following permissions: * ACCESS_FINE_LOCATION is used to obtain the current position (latitude, longitude, altitude). * BOOT_COMPLETED is used to restore active alarms after a reboot. * SET_ALARM is used to schedule alarms using the AlarmClock app. * VIBRATE is used by alarm notifications. * 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.
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 worksDouble-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:01:18 = . . -...02:51 = .. - .10:11 = . -- . .19:06 = . -.... -.Explanation:The time is processed digit by digit:. = short vibration- = long vibrationLeading 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 minutesAdditional featuresKeep 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.Tasker integration: If your smartphone has an additional hardware button that is supported by Tasker, you can configure it to vibrate the time. You can find the corresponding action in Tasker under the "Plugin" category.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.
GitHubIzzyOnDroid