Roster-Calendar
v4.0 · 18.5 MB · code 40
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File information
UpdatedAug 27, 2025
PublishedMar 17, 2021
Packagede.heinz.roster
Versionv4.0 (40)
Size18.5 MB
MD51ed81d5c31f0610eae39f10679935dfc
Min SDK30
Malware scanTRUSTED
Signature SHA1E8:EB:81:80:9D:7D:D4:91:63:A5:CC:0E:E6:F3:E6:CF:8A:B1:63:20
SignerCN=Michael Heinz, OU=Individual, O=Individual, L=Berlin, ST=Germany, C=ID
Total downloads500,000
This version500,000
DeveloperMichael Heinz
Age ratingEveryone
What's new in v4.0
-intern changes
-fix bugs
-fix bugs
Security scan
TRUSTED
- Developer signature verified 2025-08-27
- Signature SHA1 E8:EB:81:80:9D:7D:D4:91:63:A5:CC:0E:E6:F3:E6:CF:8A:B1:63:20
- File MD5 1ed81d5c31f0610eae39f10679935dfc
How to install Roster-Calendar v4.0 on Android 11+
Takes about 2 minutes. You'll need roughly 18.5 MB of free storage.
- Grab de.heinz.roster_40.apk — hit the Download button above (18.5 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 1ed81d5c31f0610e…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find de.heinz.roster_40.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=Michael Heinz, OU=Individual, O=Individual, L=Berlin, ST=Germany, C=ID. 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 Roster-Calendar — tap Open on the install screen, or find the Roster-Calendar icon in your app drawer.
Common install errors for Roster-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 11 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.