WindsportTracker Wing Windsurf
v1.16-1657731564 · 14.9 MB · code 1657731564
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File information
UpdatedJan 17, 2026
PublishedJul 29, 2021
Packagede.sunbits.windsporttracker
Versionv1.16-1657731564 (1657731564)
Size14.9 MB
MD574a3ec59dc3496f2a74a4df7cc1c5601
Min SDK21
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 v1.16-1657731564
Last update before V2 release!
Read the update instructions: https://forum.windsporttracker.com/t/android-v2-is-coming/434
Feedback is always welcome, and helps us to make the app even better ;)
Read the update instructions: https://forum.windsporttracker.com/t/android-v2-is-coming/434
Feedback is always welcome, and helps us to make the app even better ;)
Security scan
TRUSTED
- Developer signature verified 2026-01-17
- Signature SHA1 2D:84:71:A4:51:20:18:5A:AD:76:DF:AB:A3:F2:69:FE:E5:6D:9C:CD
- File MD5 74a3ec59dc3496f2a74a4df7cc1c5601
How to install WindsportTracker Wing Windsurf v1.16-1657731564 on Android 5.0 Lollipop+
Takes about 2 minutes. You'll need roughly 14.9 MB of free storage.
- Grab de.sunbits.windsporttracker_1657731564.apk — hit the Download button above (14.9 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 74a3ec59dc3496f2…. 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_1657731564.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 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.