Hand-Arm Vibration Calculator
v2.1 · 8.2 MB · code 4
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File information
UpdatedApr 24, 2026
PublishedOct 30, 2020
Packageappinventor.ai_smabruri.HAV_Calculator
Versionv2.1 (4)
Size8.2 MB
MD502a18cb833ec030f0fafa3044bea8f83
Min SDK21
Malware scanTRUSTED
Signature SHA156:03:BB:5B:2B:55:22:9B:94:E4:ED:50:AF:AD:5D:70:6B:7F:BB:5E
SignerCN=Android, OU=Android, O=Google Inc., L=Mountain View, ST=California, C=US
Total downloads1,000
This version1,000
DeveloperIting Shofwati
Age ratingEveryone
What's new in v2.1
- Fix blank data filling problem and bug
- Convert the calculation to PDF
- Convert the calculation to PDF
Security scan
TRUSTED
- Developer signature verified 2026-04-24
- Signature SHA1 56:03:BB:5B:2B:55:22:9B:94:E4:ED:50:AF:AD:5D:70:6B:7F:BB:5E
- File MD5 02a18cb833ec030f0fafa3044bea8f83
How to install Hand-Arm Vibration Calculator v2.1 on Android 5.0 Lollipop+
Takes about 2 minutes. You'll need roughly 8.2 MB of free storage.
- Grab appinventor.ai_smabruri.HAV_Calculator_4.apk — hit the Download button above (8.2 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 02a18cb833ec030f…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find appinventor.ai_smabruri.HAV_Calculator_4.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=Android, OU=Android, O=Google Inc., L=Mountain View, ST=California, 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 Hand-Arm Vibration Calculator — tap Open on the install screen, or find the Hand-Arm Vibration Calculator icon in your app drawer.
Common install errors for Hand-Arm Vibration Calculator
- "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.