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Tapir Apps
Home of aCalendar and aCalendar+
Home of aCalendar and aCalendar+
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aCalendar(+) 1.9.0-beta available now! Our first beta release now previews the all-new event and tasks editor and improved contact-linking (also available for tasks now). Of course we also fixed all known and reproducible bugs. Fell free to join our beta channel (see previous post) to get it while it's hot!
Please send us feedback to this beta version here as comment or by email to

aCalendar β-channel now available!
As of today, public beta testing is available for aCalendar and aCalendar+. If you like to get new features first and don’t mind an occasional bug, you're invited to join the beta testing group and give us feedback to improve the app.
The Play Store app should directly offer you to join the beta channel, otherwise use this link:
Please send us feedback to beta versions by email to
Keine Plus-eins-Empfehlung

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April 27 is #WorldTapirDay ! We celebrate this with a 50% SALE for aCalendar+ and for each app purchased during the sale (April 26-28) we'll protect 1 acre (4000m²) of Amazonian rainforest through our friends at Rainforest Trust.

Get aCalendar+ now on Google Play

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aCalendar+ is on SALE until January 1!

We wish you a happy new year 2015!

Version 1.0 out NOW! Thanks everyone for testing and feedback in the past 3.5 years! Stay tuned here for our beta testing group!

we are ware of the RPC S-3 issue in Google Play. We try to find a solution as fast as possible, but please understand, that we have no direct influence on Google's services.
Thanks for your understanding!

aCalendar+ 0.17.0 is pushed to Google Play - it'll take some time until it hits everyone, but after several months of implementation, designing and testing aCalendar+ now finally supports Google Tasks! And you can manage your Google Calendars. And the app starts alot faster. And you can pick attendees and the event location directly from contacts. And, and, and...

"Success! Thanks for submitting your registration application for Google I/O 2014. An email will be sent confirming your registration application to your Google account for your records.
We will randomly select applicants to receive tickets to Google I/O after the registration window closes on April 18, 2014. You will receive an email confirming your status shortly thereafter."

hopefully I'm more lucky this year...

0.16.8 out NOW! Enjoy! Now back to Google Tasks integration...

aCalendar just hit the 5 Million downloads mark in Google Play! When I first started with aCalendar about 3 years ago I didn't even remotely think of such dimensions. I know that alot of that I owe to word-of-mouth, so thanks alot for that! Danke!
Also this (and especially those user who upgraded to aCalendar+) gives me the possibility to work full time on aCalendar in the future which should speed up development a lot and bring Google Tasks (aCalendar+) and native notifications soon (please do NOT ask for concrete dates, it'll be out when it's ready). 
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