aCalendar - your calendar

Contains adsIn-app purchases
4.4
101K reviews
Content rating
Everyone
10M+
Downloads
Content rating
Everyone
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 ♥
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

4.3
94.7K reviews
Rodney Fountain
April 7, 2026
Ads are a deal breaker for me in this instance. Entering an event, hitting ok, just for an ad to pop up that you have to watch in order to finish adding your event (if you close the ad, the event does not save), is a bit too much of a piss off for me. the ads themselves are full screen videos that pop up put of nowhere which makes it extra jarring. Otherwise liked the app, but really doesn't offer anything I can't get with Google calendar minus the ads.
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Tapir Apps GmbH
April 7, 2026
Thanks for the feedback! You are the first to report such a problem with adding events. We'll investigate. Generally, we recommend removing ads for the best user experience. It's a small one-time fee.
Amy
December 23, 2025
OCT 2022 (5 stars) I spent a lot of time looking at all the calendar apps, and in my humble opinion, this is the best calendar app. UPDATE: Dec 2025 (2 stars) The ads are unreal, even though I paid. They come on full screen and they won't go away for a full 20 to 30 seconds. With one ad, I had to restart my phone because the ad wouldn't go off... going to get another app. This one now is terrible. I understand that nothing is free, but this ad is now abuse.
12 people found this review helpful
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Joanna Binion
December 3, 2024
I have used a calendar for years and find it to be easy to use with many customization options. It seems that I used to be able to set alarms for my appointments, rather than notifications. I haven't found a way to set a ringtone for a calendar notification, and the short tone that is used now does not catch my attention. Hoping that this is changed so I don't have to find another calendar app. Thanks for the good work!
7 people found this review helpful
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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