Caluwin
v0.134.66 · 7.6 MB · code 29
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File information
UpdatedJan 18, 2026
PublishedOct 30, 2020
Packagede.sommerinformatik.Caluwin
Versionv0.134.66 (29)
Size7.6 MB
MD5542b0316ea9ce88df77e536a01f1d95c
Min SDK16
Malware scanTRUSTED
Signature SHA156:C5:9E:DF:42:23:FE:BF:53:83:9A:81:13:6E:B2:CE:AF:B1:E0:15
SignerO=Sommer Informatik GmbH, L=Rosenheim
Total downloads1,000
This version1,000
DeveloperSommer Informatik GmbH
Age ratingEveryone
What's new in v0.134.66
Address of Swisspacer and BAUWERK updated
Security scan
TRUSTED
- Developer signature verified 2026-01-18
- Signature SHA1 56:C5:9E:DF:42:23:FE:BF:53:83:9A:81:13:6E:B2:CE:AF:B1:E0:15
- File MD5 542b0316ea9ce88df77e536a01f1d95c
How to install Caluwin v0.134.66 on Android API 16+
Takes about 2 minutes. You'll need roughly 7.6 MB of free storage.
- Grab de.sommerinformatik.Caluwin_29.apk — hit the Download button above (7.6 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 542b0316ea9ce88d…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find de.sommerinformatik.Caluwin_29.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 O=Sommer Informatik GmbH, L=Rosenheim. 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 Caluwin — tap Open on the install screen, or find the Caluwin icon in your app drawer.
Common install errors for Caluwin
- "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 API 16 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.