Violin Fingerboard Trainer
v2.8.9 · 19.8 MB · code 22
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File information
UpdatedMay 30, 2024
PublishedApr 24, 2022
Packagecom.jezer.violinnotestofrettrainer
Versionv2.8.9 (22)
Size19.8 MB
MD52c9b0ebaf54dd22f936191506ffeda27
Min SDK16
ABIsx86-64, armeabi-v7a, arm64-v8a
Malware scanTRUSTED
Signature SHA134:27:E3:96:98:EF:20:A2:74:F8:30:9F:6C:05:6C:90:35:BD:5C:3E
SignerCN=Jezer Crespo, L=Mandaluyong City, ST=Metro Manila, C=63
Total downloads10,000
This version10,000
DeveloperJezer Crespo
Age ratingEveryone
Security scan
TRUSTED
- Developer signature verified 2024-05-30
- Scanned for malware 2024-06-05 21:23:07
- Signature SHA1 34:27:E3:96:98:EF:20:A2:74:F8:30:9F:6C:05:6C:90:35:BD:5C:3E
- File MD5 2c9b0ebaf54dd22f936191506ffeda27
How to install Violin Fingerboard Trainer v2.8.9 on Android API 16+
Takes about 2 minutes. You'll need roughly 19.8 MB of free storage.
- Grab com.jezer.violinnotestofrettrainer_22.apk — hit the Download button above (19.8 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 2c9b0ebaf54dd22f…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.jezer.violinnotestofrettrainer_22.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=Jezer Crespo, L=Mandaluyong City, ST=Metro Manila, C=63. 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 Violin Fingerboard Trainer — tap Open on the install screen, or find the Violin Fingerboard Trainer icon in your app drawer (this build targets x86-64/armeabi-v7a/arm64-v8a devices).
Common install errors for Violin Fingerboard Trainer
- "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.
- Works on one phone but not another — this build ships x86-64/armeabi-v7a/arm64-v8a native code. Devices with a different CPU will reject it.