Guitar Tunes™
v1.4.1 · 109.8 MB · code 105015
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File information
UpdatedMar 8, 2022
PublishedJun 13, 2021
Packagecom.optek.guitartunes
Versionv1.4.1 (105015)
Size109.8 MB
MD564ff170c5fd0b81ea7f9e8b0b4b97516
Min SDK23
ABIsx86, x86-64, armeabi, armeabi-v7a, arm64-v8a, mips, mips64
Malware scanTRUSTED
Signature SHA19A:97:5E:20:B2:FA:FB:BE:A4:0A:85:64:5B:AB:FE:E0:32:F6:FE:D0
SignerCN=Rick Terrill, OU=Developers, O=Big Swing, L=Weston, ST=Connecticut, C=US
Total downloads100,000
This version100,000
DeveloperOptek Music Systems, Inc.
Age ratingEveryone
Security scan
TRUSTED
- Developer signature verified 2022-03-08
- Scanned for malware 2022-03-08 23:57:28
- Signature SHA1 9A:97:5E:20:B2:FA:FB:BE:A4:0A:85:64:5B:AB:FE:E0:32:F6:FE:D0
- File MD5 64ff170c5fd0b81ea7f9e8b0b4b97516
How to install Guitar Tunes™ v1.4.1 on Android 6.0 Marshmallow+
Takes about 2 minutes. You'll need roughly 109.8 MB of free storage.
- Grab com.optek.guitartunes_105015.apk — hit the Download button above (109.8 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 64ff170c5fd0b81e…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.optek.guitartunes_105015.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=Rick Terrill, OU=Developers, O=Big Swing, L=Weston, ST=Connecticut, C=US. 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 Guitar Tunes™ — tap Open on the install screen, or find the Guitar Tunes™ icon in your app drawer (this build targets x86/x86-64/armeabi/armeabi-v7a/arm64-v8a/mips/mips64 devices).
Common install errors for Guitar Tunes™
- "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 6.0 Marshmallow 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/x86-64/armeabi/armeabi-v7a/arm64-v8a/mips/mips64 native code. Devices with a different CPU will reject it.