Instrument Tuner
v1.91 · 2 MB · code 20
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File information
UpdatedNov 22, 2025
PublishedJul 13, 2021
Packageinstrument.tuner
Versionv1.91 (20)
Size2 MB
MD51ad6d5dcdf187d44c70985a4e37074cd
Min SDK14
Malware scanTRUSTED
Signature SHA1DC:FE:E5:B8:AF:5A:AD:12:17:C9:07:5F:5F:73:76:B7:8C:2E:3B:66
SignerCN=Matthias Gebauer
Total downloads100,000
This version100,000
DeveloperGebauer Matthias
Age ratingEveryone
What's new in v1.91
Support for Android 14
Security scan
TRUSTED
- Developer signature verified 2025-11-22
- Signature SHA1 DC:FE:E5:B8:AF:5A:AD:12:17:C9:07:5F:5F:73:76:B7:8C:2E:3B:66
- File MD5 1ad6d5dcdf187d44c70985a4e37074cd
How to install Instrument Tuner v1.91 on Android API 14+
Takes about 2 minutes. You'll need roughly 2 MB of free storage.
- Grab instrument.tuner_20.apk — hit the Download button above (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 1ad6d5dcdf187d44…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find instrument.tuner_20.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 Gebauer. 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 Instrument Tuner — tap Open on the install screen, or find the Instrument Tuner icon in your app drawer.
Common install errors for Instrument Tuner
- "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 14 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.