Prime Ruler - length measurement by camera, screen
v5.1.2 · 4.2 MB · code 74
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File information
UpdatedAug 6, 2018
PublishedAug 6, 2018
Packagecom.grymala.photoruler
Versionv5.1.2 (74)
Size4.2 MB
MD57b911a972e4d9acc57e1dcbed77b1dab
Min SDK14
ABIsx86, armeabi-v7a, arm64-v8a
Malware scanTRUSTED
Signature SHA12A:BE:7D:A2:82:8C:BB:95:DF:62:CD:AB:97:74:A8:78:17:A8:F3:14
SignerCN=Pavel Prybytak, C=UK
Total downloads10,000,000
This version10,000,000
DeveloperGRYMALA
Age ratingEveryone
What's new in v5.1.2
Augmented reality (AR) measurements.
Bug fixes for Android 8.0 Oreo.
Bug fixes for Android 8.0 Oreo.
Security scan
TRUSTED
- Developer signature verified 2021-11-11
- Scanned for malware 2020-11-09 02:04:59
- Signature SHA1 2A:BE:7D:A2:82:8C:BB:95:DF:62:CD:AB:97:74:A8:78:17:A8:F3:14
- File MD5 7b911a972e4d9acc57e1dcbed77b1dab
How to install Prime Ruler - length measurement by camera, screen v5.1.2 on Android API 14+
Takes about 2 minutes. You'll need roughly 4.2 MB of free storage.
- Grab com.grymala.photoruler_74.apk — hit the Download button above (4.2 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 7b911a972e4d9acc…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.grymala.photoruler_74.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=Pavel Prybytak, C=UK. 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 Prime Ruler - length measurement by camera, screen — tap Open on the install screen, or find the Prime Ruler - length measurement by camera, screen icon in your app drawer (this build targets x86/armeabi-v7a/arm64-v8a devices).
Common install errors for Prime Ruler - length measurement by camera, screen
- "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.
- Works on one phone but not another — this build ships x86/armeabi-v7a/arm64-v8a native code. Devices with a different CPU will reject it.