WindsportTracker Wing Windsurf
v1.15-1557731558 · 14.2 MB · code 1557731558
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File information
UpdatedOct 31, 2025
PublishedJul 29, 2021
Packagede.sunbits.windsporttracker
Versionv1.15-1557731558 (1557731558)
Size14.2 MB
MD58af02e8e08c642a90d6f693a9ffed202
Min SDK19
Malware scanTRUSTED
Signature SHA12D:84:71:A4:51:20:18:5A:AD:76:DF:AB:A3:F2:69:FE:E5:6D:9C:CD
SignerCN=Matthias Koch, OU=windsporttracker.sunbits.de, O=sunbits.de, C=DE
Total downloads50,000
This version50,000
DeveloperMatthias Koch
Age ratingEveryone
What's new in v1.15-1557731558
We are constantly improving the app.
Be aware to whitelist the app to prevent standby or other battery optimizations.
- optimized analytics
- performance improvements
- supports the latest Android version
Feedback is always welcome, and helps us to make the app even better ;)
Be aware to whitelist the app to prevent standby or other battery optimizations.
- optimized analytics
- performance improvements
- supports the latest Android version
Feedback is always welcome, and helps us to make the app even better ;)
Security scan
TRUSTED
- Developer signature verified 2025-10-31
- Signature SHA1 2D:84:71:A4:51:20:18:5A:AD:76:DF:AB:A3:F2:69:FE:E5:6D:9C:CD
- File MD5 8af02e8e08c642a90d6f693a9ffed202
How to install WindsportTracker Wing Windsurf v1.15-1557731558 on Android 4.4 KitKat+
Takes about 2 minutes. You'll need roughly 14.2 MB of free storage.
- Grab de.sunbits.windsporttracker_1557731558.apk — hit the Download button above (14.2 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 8af02e8e08c642a9…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find de.sunbits.windsporttracker_1557731558.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=Matthias Koch, OU=windsporttracker.sunbits.de, O=sunbits.de, C=DE. 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 WindsportTracker Wing Windsurf — tap Open on the install screen, or find the WindsportTracker Wing Windsurf icon in your app drawer.
Common install errors for WindsportTracker Wing Windsurf
- "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 4.4 KitKat 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.