aCalendar - your calendar
v2.9.5 · 13.3 MB · code 2009500
Verify you're human
Solve this to start the download.
File information
UpdatedFeb 9, 2026
PublishedMay 21, 2022
Packageorg.withouthat.acalendar
Versionv2.9.5 (2009500)
Size13.3 MB
MD5e809265d8af2bd7920e7aa527ed8b156
Min SDK21
Malware scanTRUSTED
Signature SHA197:D1:4F:B2:29:0A:0D:39:FE:D5:37:18:DD:82:DE:AC:2B:BD:05:D9
SignerCN=Matt
Total downloads10,000,000
This version10,000,000
DeveloperTapir Apps GmbH
Age ratingEveryone
What's new in v2.9.5
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
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
Security scan
TRUSTED
- Developer signature verified 2026-02-09
- Signature SHA1 97:D1:4F:B2:29:0A:0D:39:FE:D5:37:18:DD:82:DE:AC:2B:BD:05:D9
- File MD5 e809265d8af2bd7920e7aa527ed8b156
How to install aCalendar - your calendar v2.9.5 on Android 5.0 Lollipop+
Takes about 2 minutes. You'll need roughly 13.3 MB of free storage.
- Grab org.withouthat.acalendar_2009500.apk — hit the Download button above (13.3 MB). If your browser warns about APK files, choose Keep or Download anyway — that warning fires on every APK, not just this one.
- Trust your browser to install — on Android 8+ go to Settings → Apps → Special access → Install unknown apps, pick the app you downloaded with (Chrome, Firefox, Files, etc.), and flip Allow from this source. On older Android, toggle Unknown sources under Security.
- (Optional) Verify the file — compute the MD5 of the downloaded APK and make sure it matches e809265d8af2bd79…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find org.withouthat.acalendar_2009500.apk in your Files app under Downloads, then tap it. Android's package installer will appear.
- Check the signer — the install screen will name the publisher. For this build it should read CN=Matt. If it doesn't match, cancel — you have the wrong file.
- Review permissions & tap Install — scroll the permission list, then confirm. If Play Protect flags it, tap Install anyway (this APK was scanned as TRUSTED).
- Done — open aCalendar - your calendar — tap Open on the install screen, or find the aCalendar - your calendar icon in your app drawer.
Common install errors for aCalendar - your calendar
- "App not installed" — usually means an older or differently-signed version is already on your device. Uninstall it first, then retry. Your data may be lost unless you back it up.
- "Parse error" — the APK is for a newer Android than yours. This version needs Android 5.0 Lollipop or later. Pick an older build from the versions list below.
- "There was a problem parsing the package" — the download was interrupted. Delete the file and re-download over Wi-Fi.