Protractor

This app is must-have item. It is easy to calculate angle.

KHTSXR · oops.protractor2

Not rated yet 100K+ downloads v13.0 5.8 MB Android 4.4+ PEGI 3 · Everyone

Download APK 5.8 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v13.0 (13)
Updated: Jul 3, 2026 (3 months ago)
APK size: 5.8 MB
Requires: Android 4.4+ (API 19)
CPU support: Any (no native code)
Category: Tools (app)
Listed since: Nov 5, 2021 (at least)
Permissions: 9
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

Protractor is an app by KHTSXR in the Tools category, listed since at least November 2021. It has no native code, so it runs on any Android processor.

Since version 12.0, the APK grew from 4.9 MB to 5.8 MB. It asks for 9 permissions, none of them sensitive. Compared with version 12.0, it adds 3 new permissions: “Access adservices ad id”, “Access adservices attribution” and “Access adservices topics”. The app can read the advertising ID that ad and analytics services use.

Description

From the listing uploaded by “appupdater”.

This app is a must-have item in your smart phone. You can calculate level, slope, incline, gradient and angle. It is easy to use. After touching the screen you can measure the angle of the target. Move to set red line to target.

Version history

2 versions are listed, going back to v12.0.

v13.0 LATEST Jul 3, 2026 5.8 MB TRUSTED v12.0 Jul 29, 2023 4.9 MB TRUSTED

All 2 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Jul 3, 2026.
Certificate issued to “bbunkaheaven” This is the certificate of the Google Play version.
Same certificate as the other version checked

Store checks and file details

Developer signature verified Jul 3, 2026
Validated against Google Play Jul 3, 2026
Signed byCN=bbunkaheaven, O=bbunkaheaven, L=Seoul, C=ko
Signing certificate (SHA-1)C9:E4:BF:75:A4:8B:58:4A:A1:98:05:D3:C1:F6:CC:37:0C:B2:E7:EC
File MD56002771f695cd36167afd65ca2ad3a49
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.

Permissions (9)

Protractor requests 9 permissions, none of them sensitive.

Access adservices ad id android.permission.ACCESS_ADSERVICES_AD_ID
Access adservices attribution android.permission.ACCESS_ADSERVICES_ATTRIBUTION
Access adservices topics android.permission.ACCESS_ADSERVICES_TOPICS
Advertising ID com.google.android.gms.permission.AD_ID
Full network access android.permission.INTERNET
Internal broadcast protection (app-defined) oops.protractor2.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Prevent the device from sleeping android.permission.WAKE_LOCK
Run foreground services android.permission.FOREGROUND_SERVICE
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Basic touch input android.hardware.faketouch
Landscape screen android.hardware.screen.landscape

Protractor 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 Protractor 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 6002771f695cd36167afd65ca2ad3a49.