aCalendar - Android Calendar

aCalendar - Android Calendar


(4 stars)



5,000,000 - 10,000,000 downloads

  • Very easy to navigate
  • Super customizable
  • Lightweight, no battery drain
  • Auto-imports your Google calendars
  • Easy to add events in the app
  • Three different widgets
  • Couldn't find a single one - it's amazing!
Add this app to your lists

Download aCalendar - Android Calendar

We will send you an email, so you must have to log in

QR CODEv 1.3.0 - 1.66 MB - FREE

This is an example QR. Click on button and use a QR code scanner to download directly in to your Android device. [ More info ]


Download the APK file to your computer. Once uploaded to your mobile device, install the app directly

Expert's Review

"The Swiss army knife of calendar apps"

Reviewed by / Jan 15, 2015

In three words: perfect calendar app

aCalendar is everything I ever wanted in a calendar app. It's super simple, ultra customizable, eminently navigable, and practically perfect in every way.

If you've connected your device to your Google account, aCalendar will automatically import data from any calenders you've linked there. Swap between a month, week, and day view with swipes that just make sense, smoothly transitioning between each view. Events are grouped by color so you keep your various task lists organized, and you can add new events right within the app, even scheduling them to recur if you like. Birthdays are automatically imported from your contacts list. Widgets are gorgeous and available for all three views.

It's lightweight, doesn't drain your battery, totally free, and doesn't have a single ad. Can I get a round of applause, please?

If you upgrade to the premium version, you get even more views plus extra themes and business.oriented features like free/busy settings and sharing files. Also, proceeds go towards helping protect the endangered Mountain Tapir. Seriously, I want to give these guys a kiss.

I couldn't find a single thing not to love about aCalendar. Very, very highly recommended.

Tags: acalendar apk, acalendar, acalendar.apk, acalendar widget, acalendar kalender apk, acal, acalendar themes, acalendar calendar, acalendar calendar.apk, acalendar kalender.apk.

Developer's original description available here
9/10 "an almost perfect calendar" - Softonic, September 2013

● intuitive navigation with smooth transitions between day, week and month view
● 48 colors per calendar,
● per-event colors (if supported by the event's calendar)
● flexible recurrences
● year view
● birthdays from your contacts (or without contacts)
● Fullscreen widgets for all 3 views plus floating 7 days
● uses Android's native calendar backend and synchronization
● moon phases
● QR and NFC barcode sharing of events
● no ads

EXTRA FEATURES only in aCalendar+
With aCalendar+ you get a dozen of extra features including more views, advanced settings, Tasks, more color themes and public holidays.
Also you'll find business-oriented features like invitations, free/busy settings and sharing as text or file.
Finally your purchase helps protect the habitat of the endangered Mountain Tapir as we donate 10% of all revenue to rainforest conservation through our friends at World Land Trust

● move forward and backward by swiping vertically or volume rocker
● 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 event
● long-press to add new event
● long-press on mini-month to go to today or jump to date
● tap on photo to open quick contact menu
● 3-finger-tap to go to today

native language support for around 30 languages. Those are mostly user-contributed, please contact me if there is a bad translation or you'd like your language added!

aCalendar only asks for mandatory permissions for its functionality: Read and write contact data for birthdays as well as read and write calendar data for events. 'Send Email to guests' is bound to 'write calendar data' by Google. NFC is for sharing events by touching another NFC-enabled phone, and requires manual confirmation.

Unfortunately app2SD cannot be supported, because homescreen widgets do not work from SD. This is an Android limitation. But aCalendar is optimized not only for speed but also for size.

♥ 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 is free and ad-free. No features will be taken away, but some advanced calendar features might only come to aCalendar+.


aCalendar - Android Calendar Videos

Recently changed in this version

NEW Year View (still pretty naked, but we just started...)
NEW Quickly change duration in event editing
NEW Public holidays marked in month overview (aCalendar+)
DESIGN Dark action bar for Android 4.1+
FIX 4x4 Widget resizing bug
several minor improvements and bug fixes

If there are any questions or problems please contact us by email to Thank you!

Lists with aCalendar - Android Calendar

Some lists where this application appears: new.

Changelog and permissions

PermissionsChangelogPackage org.withouthat.acalendar
  • - Perform I/O operations over NFC (Near Field Communication).
  • - Read your calendar data.
  • - Read your contact data.
  • - Know if the system has finished booting.
  • - Use the vibrator.
  • - Prevent your device from sleeping or screen from dimming (turn brightness down).
  • - Write, but not read unless allowed by another permission, your calendar data.
  • - Write, but not read unless allowed by another permission, your contacts data.

Displaying 3 of 0 - show all

  • Updated
    New version 1.3.0 released 2d ago.
  • Updated
    New version 1.2.1 released on 04/23/15.
  • Updated
    New version 1.1.2 released on 03/31/15.
  • Updated
    New version 1.1.1 released on 03/23/15.
  • Updated
    New version 1.0.2 released on 01/09/15.
  • Updated
    New version 1.0 released on 12/12/14.
  • Updated
    New version 0.99.3 released on 10/03/14.
  • Updated
    New version 0.98.4 released on 09/06/14.
  • Updated
    New version 0.18.4 released on 06/18/14.
  • Updated
    New version 0.18.2 released on 06/14/14.
  • Updated
    New version 0.18.1 released on 06/14/14.
  • Updated
    New version 0.17.2 released on 05/01/14.
  • Updated
    New version 0.16.8 released on 03/13/14.
  • Updated
    New version 0.16.7 beta released on 02/01/14.
  • Updated
    New version 0.16.6 beta released on 01/14/14.
  • Updated
    New version 0.16.5 beta released on 01/07/14.
  • Updated
    New version 0.16.4 beta released on 01/07/14.
  • Updated
    New version 0.16.3 beta released on 01/06/14.
  • Updated
    New version 0.16.2 beta released on 01/03/14.
  • Updated
    New version 0.16.1 beta released on 01/03/14.
  • Updated
    New version 0.16.0 beta released on 12/23/13.
  • + downloads
    Becomes more popular. 5000000 downloads level reached on 12/05/13.
  • Updated
    New version 0.15.5 beta released on 11/20/13.
  • Updated
    New version 0.15.4 beta released on 09/25/13.
  • Updated
    New version 0.15.2 beta released on 09/03/13.
  • Updated
    New version 0.15.1 beta released on 06/19/13.
  • Updated
    New version 0.15.0 beta released on 04/29/13.
  • Updated
    New version beta released on 04/16/13.
  • Updated
    New version beta released on 04/14/13.
  • Updated
    New version beta released on 03/20/13.
  • Updated
    New version beta released on 03/19/13.
  • Updated
    New version 0.14.7 beta released on 02/11/13.
  • Updated
    New version 0.14.6 beta released on 12/17/12.
  • Updated
    New version 0.14.5 beta released on 12/11/12.
  • Updated
    New version beta released on 12/10/12.
  • Updated
    New version 0.14.2 beta released on 10/23/12.
  • Updated
    New version 0.14.1 beta released on 10/16/12.
  • Updated
    New version 0.13.9 beta released on 08/17/12.
  • Updated
    New version 0.13.8 beta released on 08/16/12.
  • Updated
    New version 0.13.7 beta released on 08/16/12.
  • Updated
    New version 0.13.6 beta released on 08/01/12.
  • + downloads
    Becomes more popular. 1000000 downloads level reached on 08/01/12.
  • Updated
    New version 0.13.4 beta released on 07/23/12.
  • Updated
    New version 0.13.3 beta released on 07/09/12.
  • Updated
    New version 0.13.2 beta released on 07/02/12.
  • Updated
    New version 0.13.1 beta released on 06/26/12.
  • Updated
    New version 0.13.0 beta released on 06/25/12.
  • Updated
    New version 0.12.9 beta released on 05/27/12.
  • Updated
    New version 0.12.8 beta released on 05/13/12.
  • Updated
    New version 0.12.7 beta released on 05/06/12.

Displaying 4 of 50 - show all

Add comment
Comments and ratings for aCalendar - Android Calendar
  • (0)

    by wr52351 on 12/01/2012

    Far the best of about five Calendars I tested, nearly perfect.
    A nice additional feature could be a fast switch form monthly to weekly to dayly view.

  • (0)

    by tobias.heimpel on 27/08/2011

    Great calendar, but PLEASE add a bigger Widget, then it would be the perfect calendar!

  • (0)

    by J. E. Marsden on 23/05/2015

    works well for the most part, but loss of all events 3 separate times (save freak'n holidays) very annoying!

  • (0)

    by Louis Kahl on 22/05/2015

    Looks exactly like what i wanted... the on board calender with the Samsung S5 only shows dots for events i have entered. The acalender shows the title of events. Also synced with my on board calendar...

  • (0)

    by shapeyourlifeoflove kingery on 22/05/2015


  • (0)

    by BRuno Romero on 22/05/2015

    Amazing calendar, almost perfect. I recommend it seriously. Thanks guys for this useful tool.

  • (0)

    by Marcel Sterzzaj on 21/05/2015

    Used to be great but the notifications don't go off anymore. Shouldn't that be one of the main features?