Co Checker

CO Measurement Chekcer using audio jack

Meter App · kr.co.finest.cochecker

Not rated yet 10K+ downloads v1.9.7 2.3 MB Android 4.3+ PEGI 3 · Everyone

Download APK 2.3 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v1.9.7 (38)
Updated: Aug 4, 2026 (2 months ago)
APK size: 2.3 MB
Requires: Android 4.3+ (API 18)
CPU support: Any (no native code)
Category: Tools (app)
Listed since: Jun 12, 2023 (at least)
Permissions: 4 (3 sensitive)
Website: kanetest.com
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

Co Checker is an app by Meter App in the Tools category, listed since at least June 2023. It has no native code, so it runs on any Android processor.

It asks for 4 permissions, 3 of them sensitive: record audio, read shared storage and modify shared storage. It asks for the same permissions as version 1.9.6.

What's new in v1.9.7

Supported Android 16

Description

From the listing uploaded by “appupdater”.

The “Co Checker” transmits the data via audio jack. Currently, this App can be used on Finest Device.

Version history

3 versions are listed, going back to v1.9.5.

v1.9.7 LATEST Aug 4, 2026 2.3 MB TRUSTED v1.9.6 Aug 3, 2026 2.3 MB TRUSTED v1.9.5 Sep 1, 2025 2.3 MB TRUSTED

All 3 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Aug 4, 2026.
Certificate issued to “Finest” This is the certificate of the Google Play version.
Same certificate as the 2 other versions checked

Store checks and file details

Developer signature verified Aug 4, 2026
Validated against Google Play Aug 4, 2026
Signed byCN=Finest Co., OU=Company, O=Finest, L=Songdo, ST=Incheon, C=KO
Signing certificate (SHA-1)A5:69:27:81:96:B6:2A:AB:69:5D:68:E1:0F:86:F6:D3:5F:10:87:57
File MD5290d73ef9fe6db03dac3024423388075
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 (2 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (4)

Co Checker requests 4 permissions, 3 of them sensitive.

Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
Record audio (microphone) Sensitive android.permission.RECORD_AUDIO
Full network access android.permission.INTERNET

Required hardware & features

Basic touch input android.hardware.faketouch
Microphone android.hardware.microphone
Portrait screen android.hardware.screen.portrait

Co Checker 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 Co Checker 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 2 other versions checked. After downloading, check that the file's MD5 is 290d73ef9fe6db03dac3024423388075.