Ruler
Simple application that displays a ruler on your screen to measure small items.
Babak Mozaffari · com.metaworldsolutions.android.ruler
- Signature matches the Google Play version Details
At a glance
- Latest version
- v2.1.7 (217)
- Updated
- Sep 2, 2026 (1 month ago)
- APK size
- 2.3 MB
- Requires
- Android 4.0.3+ (API 15)
- CPU support
- Any (no native code)
- Category
- Tools (app)
- Listed since
- Oct 20, 2022 (at least)
- Website
- babakmozaffari.com/Ruler
- Developer contact
- [email protected]
About this APK
Ruler is an app by Babak Mozaffari in the Tools category, listed since at least October 2022. It has no native code, so it runs on any Android processor.
What's new in v2.1.7
Description
From the listing uploaded by “appupdater”.
Version history
2 versions are listed, going back to v2.1.4.
Security & authenticity
Signing certificate
- Signature matches the Google Play version Checked by the source store on Sep 2, 2026.
- Certificate issued to “Metaworld Solutions” This is the certificate of the Google Play version.
- Same certificate as the other version checked
Store checks and file details
- Developer signature verified Sep 2, 2026
- Validated against Google Play Sep 2, 2026
- Signed byCN=Babak Mozaffari, OU=Unknown, O=Metaworld Solutions, L=Los Angeles, ST=CA, C=US
- Signing certificate (SHA-1)96:05:48:80:22:87:15:AC:B6:81:3A:2A:78:A2:60:C9:FC:34:36:0C
- File MD5688fca6d62fc921370138c69ada5ddce
- Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020
Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (1 other version compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.
Required hardware & features
- Basic touch input android.hardware.faketouch
Ruler APK: questions and answers
Can I install this APK over the version I already have?
Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.
Is the Ruler APK safe?
No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the other version checked. After downloading, check that the file's MD5 is 688fca6d62fc921370138c69ada5ddce.
