# OBD SOUND vs OBD2 Scanner + Engine Sound

The clearest difference is rating: OBD2 Scanner + Engine Sound at 4.0 against OBD SOUND's 2.6. OBD2 Scanner + Engine Sound also leads on update cadence (every 9 days vs every 2 months). OBD SOUND's advantage is ads (none vs shown) and ratings volume (39 vs 1). On price, in-app purchases and monetization model there is nothing between them.

Both are free to download. OBD SOUND sells 1 one-off in-app purchase 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 2.6. That said, the two scores are not equally well evidenced: OBD SOUND has 39 ratings behind it against 1, so its average is the more settled of the two.

OBD SOUND ships an update every 2 months, OBD2 Scanner + Engine Sound every 9 days. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | OBD SOUND | OBD2 Scanner + Engine Sound |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.6 (39 ratings)](https://appshunter.io/ios/app/obd-sound/id960839379/reviews) | **[4.0 (1 ratings)](https://appshunter.io/ios/app/obd2-scanner-plus-engine-sound/id6789023964/reviews)** |
| Number of ratings | **39** | 1 |
| Positive reviews | 30.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 9 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 75 MB | 6 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [artur tagirov](https://appshunter.io/developer/931425259) | [Sena Takasawa](https://appshunter.io/developer/1887478690) |

## What reviewers say

### OBD SOUND

[App page](https://appshunter.io/ios/app/obd-sound/id960839379)

Transform your standard car into a sports car with realistic engine sounds. This app uses your Wi-Fi OBD adapter to read ECU data and generate dynamic engine and turbocharger sounds, playable through your car's audio system. A demo mode is available for testing without an adapter.

**Highlights:** Real-time ECU data reading, Customizable engine sounds, Turbocharger sound effects, Demo mode for testing, Wi-Fi OBD adapter integration, Audio output via AUX, Bluetooth, or FM transmitter

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all sounds | $3.99 | 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 OBD SOUND free?

OBD SOUND 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, OBD SOUND or OBD2 Scanner + Engine Sound?

OBD2 Scanner + Engine Sound is rated higher. OBD SOUND averages 2.6 out of 5 from 39 ratings, while OBD2 Scanner + Engine Sound averages 4.0 from 1 ratings.

### Do OBD SOUND or OBD2 Scanner + Engine Sound have ads?

OBD2 Scanner + Engine Sound shows ads; OBD SOUND does not.

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

OBD SOUND ships an update every 2 months, and OBD2 Scanner + Engine Sound every 9 days. Most recently, OBD SOUND was updated on November 1, 2026 and OBD2 Scanner + Engine Sound on October 31, 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.*