Resistor ratio calculator
v3.0.15 · 3.6 MB · code 3015
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File information
UpdatedMar 18, 2026
PublishedJul 9, 2021
Packagecom.peterhohsy.ratiocalculator
Versionv3.0.15 (3015)
Size3.6 MB
MD55bd9ebd9df123515ecc5af30a3064793
Min SDK21
Malware scanTRUSTED
Signature SHA141:02:A5:4E:EF:CC:4A:31:97:6A:CF:74:8A:ED:A1:D6:58:A7:02:DC
SignerCN=Peter Ho
Total downloads10,000
This version10,000
DeveloperPeter Ho
Age ratingEveryone
What's new in v3.0.15
Fix minor bugs
Security scan
TRUSTED
- Developer signature verified 2026-03-18
- Signature SHA1 41:02:A5:4E:EF:CC:4A:31:97:6A:CF:74:8A:ED:A1:D6:58:A7:02:DC
- File MD5 5bd9ebd9df123515ecc5af30a3064793
How to install Resistor ratio calculator v3.0.15 on Android 5.0 Lollipop+
Takes about 2 minutes. You'll need roughly 3.6 MB of free storage.
- Grab com.peterhohsy.ratiocalculator_3015.apk — hit the Download button above (3.6 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 5bd9ebd9df123515…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.peterhohsy.ratiocalculator_3015.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=Peter Ho. 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 Resistor ratio calculator — tap Open on the install screen, or find the Resistor ratio calculator icon in your app drawer.
Common install errors for Resistor ratio 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.