# CarDiag : Car Diagnostic OBD2

> A mechanic in your pocket. Diagnose a car is as simple as a child's play (OBD2)

Canonical page: [https://chrome-stats.com/d/com.stom.cardiag](https://chrome-stats.com/d/com.stom.cardiag)

## Overview

- **ID:** `com.stom.cardiag`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Hi-Group
- **Category:** AUTO\_AND\_VEHICLES
- **Downloads:** 224,730
- **Rating:** 3.40 / 5 (455 ratings)
- **Version:** 1.3.5
- **Last updated:** 2026-09-09
- **First published:** 2018-05-03
- **Publisher country:** FR
- **Size:** 29 MB
- **Data as of:** 2026-09-13
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.stom.cardiag)
- **Website:** [https://www.cardiag.me/](https://www.cardiag.me/)
- **Privacy policy:** [http://cardiag.me/cgu.txt](http://cardiag.me/cgu.txt)

## Description

CarDiag is your ultimate car diagnostic tool that transforms your smartphone into a mechanic in your pocket. Compatible with all Bluetooth OBD2 devices, it allows you to effortlessly diagnose vehicle issues, understand fault codes in simple terms, and reset your check engine light without costly garage visits. The app supports DIY repairs with tutorials and offers tips for buying parts and estimating repair costs at nearby mechanics. Additionally, it features a digital maintenance book to log repairs and invoices, enabling easy vehicle upkeep and pre-inspection checks before buying a car.

Designed for all OBD-II compatible vehicles, CarDiag empowers motorists to independently manage car breakdowns, component wear, battery status, and pollution. Its intuitive interface makes car diagnostics accessible from "A" to "Z", streamlining vehicle maintenance and reducing repair expenses. With CarDiag, saving money and maintaining your car has never been easier.

## Rankings

- #150,440 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_ADSERVICES_AD_ID`
- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.BLUETOOTH_CONNECT`
- `android.permission.BLUETOOTH_SCAN`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.INTERNET`
- `android.permission.POST_NOTIFICATIONS`
- `android.permission.WAKE_LOCK`
- `com.android.vending.BILLING`
- `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE`
- `com.google.android.gms.permission.AD_ID`
- `com.stom.cardiag.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

## Review summary

User reviews show a generally positive reception for CarDiag, with many calling it nice, epic, excellent, or amazing, and some noting it is helpful for car diagnostics. The main pros are its usefulness for diagnosing vehicles and the app being free or affordable compared with others. The most common criticisms focus on the experience being hampered by too many ads, the app not supporting certain car models, and a perceived lack of advanced features for power users. Overall, it appears to be a well-liked, accessible tool for casual car checks, but needs improvements in ads, model coverage, and feature depth.

### Pros

- Overall very positive reception; reviewers describe the app as nice, excellent, and amazing.
- Useful for car diagnostics and information; some reviews say it helped them a lot and that it is a good solution for cars.
- Perceived as free or cheaper than competing apps.

### Cons

- Ads are excessive and degrade the user experience.
- Missing car models / limited model coverage (e.g., Renault Kwid 2018, Hyundai Eon reported as unavailable).
- Limited features for advanced users / basics only according to some reviews.

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.stom.cardiag)