aCalendar - your calendar

Contains adsIn-app purchases
101K reviews
Content rating
PEGI 3
10M+
Downloads
Content rating
PEGI 3
In-App Purchases
Learn more
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About this app

aCalendar makes your day, week, and month since 14 years!

For questions or problems see our help system at https://acalendar.tapirapps.de or contact our support at support@tapirapps.de

FEATURES
● intuitive navigation between day, week, month and agenda view
● 8 powerful widgets (NEW birthday widget with 2.9)
● multi-select with various actions (NEW in 2.9)
● export as ICS or CSV
● year view
● lots of design and view customizations
● Google Calendar management
● flexible recurrences
● birthdays from your contacts (or without contacts)
● uses Android's native calendar backend and synchronization
● moon phases
● printing
● mini month or graphical week overview in day and week view
● free with ads and some one-time IAPs

EXTRA FEATURES (aCalendar+ or as In-App-Purchase)
● Public holidays (and school holidays for some countries) - configurable in the calendar list
● More colors (theme/UI colors, background colors, calendar colors, event colors)
● Business features (Invite attendees, link contacts, free/busy, private, profiles, share as ICS)
● Tasks (manage Google Tasks or tasks from CalDAV/OpenTasks)
● No ads (removes the occasional ad)
♥ 10% for the planet! Tapir Apps is a proud sponsor of World Land Trust, Rainforest Trust and the Tapir Specialist Group.

USAGE
● move forward and backward in the calendar by swiping vertically
● switch between calendar views with a horizontal swipe (opens the day or week you start the swipe gesture on) or double-tap for day view
● tap to open a calendar event
● long-press to add new calendar event
● long-press on mini-month to go to today or jump to date
● configurable actions on 3-finger-tap, tap on title, volume buttons
● long press an event in day view to drag to a different time

PERMISSIONS
aCalendar only requests permissions needed for app functionality. aCalendar+ respects your privacy and will NEVER send any of your private data anywhere unless configured by YOU. Please contact us if you have questions about permissions.

TRANSLATIONS
aCalendar+ is translated into more than 30 languages, mostly by volunteers - please let us know if there is a bad translation somewhere or you want to add your language.

LOVE
♥ aCalendar is made with love, sweat and tears in the heart of Munich. If you like aCalendar, please rate or comment and recommend it to your friends. Also consider upgrading to aCalendar+ for extra features ♥
aCalendar - makes your day, week and month!
Updated on
Sep 8, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Device or other IDs
  • This app may collect these data types
    Personal info and Device or other IDs
  • Data is encrypted in transit
  • Data can’t be deleted

Ratings and reviews

94.6K reviews
T James
June 27, 2026
The calendar is great - really good. But if you have a Xiaomi phone you'll need to jump through hoops with your settings if you want the task reminders on time. Not sure why this isn't the case for calendar reminders which ARE on time 🤷🏼 Currently having to run phone in battery performance mode as I use tasks all the time (and the implementation is great, apart from the late notifications).
1 person found this review helpful
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Tapir Apps GmbH
June 27, 2026
Calendar notifications origin from the android calendar system, and thus other sets of energy saving options apply than for app-internal notifications.
A Google user
December 7, 2018
Ruined. This app was the best. It's now much harder to navigate. I have set alarms i can't seem to undo, I've deleted items unintentionally. I don't trust it. A couple of months back all my entries disappeared over a period of hours which caused me a nightmare. I routinely screen shot the week view in case it happens again, which i shouldn't have to do. These latest changes are totally unnecessary. I've just bought a good old fashioned paper diary for 2019, i never had any issues with old skool methods!!
1 person found this review helpful
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Martin Pilkington
January 13, 2024
Constantly asked to give Google permission. I use local calendars only so don't need Google. It's frustrating how this can't be turned off (even though it's turned off in settings). I was told it 'does nothing' but yet the developer leaves the bug there. I'll be looking for a new calendar. Otherwise it would have been great app. I'm not using anything dodgy like microG. No other app constantly request Google permissions.
5 people found this review helpful
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Tapir Apps GmbH
January 11, 2024
We cannot fix it, as it's not a bug in aCalendar. The request does not come from aCalendar. It's a system bug. Probably you are using microG or similar?

What’s new

Welcome to aCalendar 2.9!
If you have any questions or problems, please go to MENU - HELP (or visit https://acalendar.tapirapps.de)!
As indie app studio we rely on good ratings, especially as all our upgrades are one-time purchases.
Full changelog: https://acalendar.tapirapps.de/en/support/solutions/articles/36000509331