aCalendar - your calendar

Contains adsIn-app purchases
97.4K reviews
Content rating
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About this app

aCalendar 2 is available NOW!
We improved everything but kept it familiar.
For questions or problems see our new help system at or contact our support at

● intuitive navigation between day, week, month and agenda view
● 7 powerful widgets
● printing
● 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
● 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.

● 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

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.

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.

♥ 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
Feb 5, 2024

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

91.5K reviews
Laura Johnson
March 21, 2024
Update- 3/21/24- this is now the second time that items I have manually entered ALL disappeared from my calendar. I looked at the calendar last night and everything was there, today, gone. I have happily used this calendar app for YEARS, but just this morning all my events have suddenly disappeared. I had work meetings and events, my kids' appointments, etc in there, and now I have nothing. I'm really upset about this and need someone to get in touch with me regarding how to restore my data!
6 people found this review helpful
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Tapir Apps GmbH
March 22, 2024
ACalendar is a user interface to your Android calendar data, it has no own data and is not involved in synchronization of your cloud calendar data between Cloud and Android. Please contact our support directly via menu - help and include a screenshot of the calendar list (menu - manage calendars), so we understand where your data is/was stored.
A Google user
March 19, 2020
I had an issue with the agenda widget not showing my tasks. I sent them an email today and within a few hours a gentleman named Matthias replied back. A few back and forth email's ...and I sent a few screenshots....the issue was resolved. Excellent friendly customer support! I have now purchased their aCalendar+ app. This app is what I have been looking for. Great options without being overwhelming. Love the option to adjust the text size since I am a senior. Also totally enjoying the dark mode. Thank you again customer support!
15 people found this review helpful
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A Google user
September 17, 2018
I have been using aCalender for years, actually upgraded to aCalender+ tasks. No other calendar app like it. It does what it is supposed to do, offers many options, and synchs across all of my devices. No worries, ever. Occasionally I have looked around to see what else is out there, but I cannot find anything better than aCalender. 10 STARS!!!
5 people found this review helpful
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What's new

Welcome to aCalendar 2.8!
If you have any questions or problems, please go to MENU - HELP (or visit!
As indie app studio we rely on good ratings, especially as all our upgrades are one-time purchases.
Full changelog: