# OBD2 Cat vs CarCoding

The clearest difference is rating: OBD2 Cat at 5.0 against CarCoding's 1.0. OBD2 Cat also leads on in-app purchases (none vs 3). CarCoding's advantage is update cadence (every 2 days vs every 3 weeks) and device support (3 vs 1). On price, ratings volume, ads and iOS requirement there is nothing between them.

Both are free to download. CarCoding sells 3 in-app purchases, starting at $2.49 per month. OBD2 Cat asks for nothing beyond the download.

OBD2 Cat holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

OBD2 Cat ships an update every 3 weeks, CarCoding every 2 days. The most recent releases landed on October 10, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | OBD2 Cat | CarCoding |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/obd2-cat-car-scanner/id6751106245/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/carcoding-obd2-car-scanner/id6759403080/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Monetization | **Free** | Freemium |
| Size | 14 MB | 101 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Roman Tikhonychev](https://appshunter.io/developer/1833446011) | [Mustafa YILMAZ](https://appshunter.io/developer/1491589580) |

## What reviewers say

### OBD2 Cat

[App page](https://appshunter.io/ios/app/obd2-cat-car-scanner/id6751106245)

This app reads diagnostic trouble codes and live vehicle data from compatible cars using a Bluetooth OBD2 adapter. It helps drivers understand dashboard warnings by checking engine codes, viewing sensor data, and retrieving vehicle identification information.

**Highlights:** Read diagnostic trouble codes (DTCs), Clear supported trouble codes, View live engine and sensor data, Check VIN, make, model, and year, Auto Scan for codes, View OBD protocol and connection status

**In-app purchases:** none


### CarCoding

[App page](https://appshunter.io/ios/app/carcoding-obd2-car-scanner/id6759403080)

This app acts as an OBD2 scanner, providing diagnostics, live data, and ECU coding for your vehicle. It helps you understand check engine lights, clear codes, monitor engine performance, and access hidden car features. Supports ELM327 adapters and offers AI-powered repair assistance.

**Highlights:** OBD2 diagnostics and fault code clearing, AI repair assistant for code explanations, Live engine data with customizable gauges, ECU coding and access to hidden features, Apple CarPlay and Siri integration, Vehicle compatibility checks

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CarCoding Pro Monthly | $2.49 | per month |
| CarCoding Pro Annual | $19.99 | per year |
| CarCoding Pro – Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is OBD2 Cat free?

OBD2 Cat is free to download, with no in-app purchases.

### Is CarCoding free?

CarCoding is free to download, with in-app purchases available.

### Which has better reviews, OBD2 Cat or CarCoding?

OBD2 Cat is rated higher. OBD2 Cat averages 5.0 out of 5 from 1 ratings, while CarCoding averages 1.0 from 1 ratings.

### Do OBD2 Cat or CarCoding have ads?

Neither OBD2 Cat nor CarCoding shows ads.

### Which is updated more often, OBD2 Cat or CarCoding?

OBD2 Cat ships an update every 3 weeks, and CarCoding every 2 days. Most recently, OBD2 Cat was updated on October 10, 2026 and CarCoding on October 11, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*