Co Checker

Name: Co Checker
Rating: 2.2142856 (43 reviews)
Author: Meter App

By: Meter App App

CO Measurement Chekcer using audio jack

Overview

Google Play Store

Downloads

34,292 ▲ 16

Data as of 2026-08-03

Rating:

2.21

(43)

Version:

1.9.6

Last updated: 2026-07-28

Ranking

#344,308 ▼ 680

Overall

Features & Capabilities

Co Checker

Co Checker is a reliable Chrome extension designed to measure carbon monoxide (CO) levels safely and efficiently using the audio jack of your device. Currently compatible with Finest Device, it enables quick CO detection by transmitting data through the audio interface, providing a convenient and portable solution.

This extension offers an innovative approach to environmental safety by utilizing audio jack connectivity for CO measurement, making it ideal for users needing on-the-go CO monitoring without complex hardware setups.

User Growth & Download Statistics

App

By:

Downloads:

Rating:

Version:

1.9.6 Last updated: 2026-07-28

Version code:

Creation date:

2015-11-23

Publisher country:

Permissions:

android.permission.RECORD_AUDIO Very high risk
android.permission.READ_EXTERNAL_STORAGE High risk
android.permission.WRITE_EXTERNAL_STORAGE High risk
android.permission.INTERNET Low risk

Size:

2.32MB

Email:

cm*****@kanetest.com

URLs:

Website ,Privacy policy

Full description:

Source:

Google Play Store

Data ingested on:

2026-08-03

Compare stats and ranking:

Ranking

# 344,308 ▼ 680

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Android app. Please use these information below to contact the Android app developer.

Developed by:

Meter App

Google Play Store

https://play.google.com/store/apps/details?id=kr.co.finest.cochecker

Email:

cm*****@kanetest.com

Website:

http://www.kanetest.com

User Reviews

Many users report the Co Checker app frequently fails to connect to the CO detector device, causing frustration and a belief that it does not work. The app is often criticized for lack of instructions and false advertising as users expect it to function as a standalone CO2 meter. While some praise its quick calibration and affordability when used with the COA1 sensor, battery consumption and poor customer service further diminish user satisfaction.

Pros

Works great with the COA1 sensor when it connects properly.
Calibration process is relatively quick (about 20 seconds).
Portable and reasonably priced compared to alternative CO detectors.

Cons

Frequently fails to connect or identify the CO detector device.
False advertising and misrepresentation; users expect a standalone CO2 meter but it's dependent on external hardware.
No clear instructions or guidance on how to use the app effectively.
High battery consumption during use despite calibration being quick.
Poor customer support with unresponsive technical assistance.