# CarCoding vs OBD2 Scanner + Engine Sound

The clearest difference is rating: OBD2 Scanner + Engine Sound at 4.0 against CarCoding's 1.0. CarCoding's advantage is ads (none vs shown) and update cadence (every 2 days vs every 9 days). On price, ratings volume, in-app purchases and monetization model there is nothing between them.

Both are free to download. CarCoding sells 3 in-app purchases, starting at $2.49 per month and OBD2 Scanner + Engine Sound sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

OBD2 Scanner + Engine Sound holds the better App Store score, 4.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

CarCoding ships an update every 2 days, OBD2 Scanner + Engine Sound every 9 days. The most recent releases landed on October 11, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | CarCoding | OBD2 Scanner + Engine Sound |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/carcoding-obd2-car-scanner/id6759403080/reviews) | **[4.0 (1 ratings)](https://appshunter.io/ios/app/obd2-scanner-plus-engine-sound/id6789023964/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Every 9 days |
| Monetization | Freemium | Free with in-app purchases |
| Size | 101 MB | 6 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Mustafa YILMAZ](https://appshunter.io/developer/1491589580) | [Sena Takasawa](https://appshunter.io/developer/1887478690) |

## What reviewers say

### 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 |


### OBD2 Scanner + Engine Sound

[App page](https://appshunter.io/ios/app/obd2-scanner-plus-engine-sound/id6789023964)

Monitor your car's engine performance and hear its sound in real-time. Customize your dashboard with various widgets and track your drives with detailed maps and trip data. Offers a demo mode and optional Pro features for an enhanced experience.

**Highlights:** Real-time OBD2 data display, Engine sound simulation based on RPM, Customizable dashboard with widgets, Trip computer and fuel economy tracking, Speed and RPM on map view, HUD mode for windshield projection

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |
| car_ui Pro (One-Time) | $4.99 | one-time |


## Frequently asked questions

### Is CarCoding free?

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

### Is OBD2 Scanner + Engine Sound free?

OBD2 Scanner + Engine Sound is free to download, with in-app purchases available.

### Which has better reviews, CarCoding or OBD2 Scanner + Engine Sound?

OBD2 Scanner + Engine Sound is rated higher. CarCoding averages 1.0 out of 5 from 1 ratings, while OBD2 Scanner + Engine Sound averages 4.0 from 1 ratings.

### Do CarCoding or OBD2 Scanner + Engine Sound have ads?

OBD2 Scanner + Engine Sound shows ads; CarCoding does not.

### Which is updated more often, CarCoding or OBD2 Scanner + Engine Sound?

CarCoding ships an update every 2 days, and OBD2 Scanner + Engine Sound every 9 days. Most recently, CarCoding was updated on October 11, 2026 and OBD2 Scanner + Engine Sound on September 24, 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.*