# OBD2 Gauges vs OBD2 Scanner + Engine Sound

The clearest difference is ads: OBD2 Gauges at none against OBD2 Scanner + Engine Sound's shown. OBD2 Gauges also leads on update cadence (every 3 days vs every 9 days). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. OBD2 Gauges sells 2 in-app purchases, starting at $3.99 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 Gauges ships an update every 3 days, OBD2 Scanner + Engine Sound every 9 days. The most recent releases landed on October 9, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | OBD2 Gauges | OBD2 Scanner + Engine Sound |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/obd2-scanner-plus-engine-sound/id6789023964/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 days** | Every 9 days |
| Monetization | — | Free with in-app purchases |
| Size | 52 MB | 6 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Edward Williams](https://appshunter.io/developer/1639798187) | [Sena Takasawa](https://appshunter.io/developer/1887478690) |

## What reviewers say

### OBD2 Gauges

[App page](https://appshunter.io/ios/app/obd2-gauges/id6759607610)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads (Monthly) | $3.99 | per month |
| Remove Ads (Lifetime) | $24.99 | 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 OBD2 Gauges free?

OBD2 Gauges 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.

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

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

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

OBD2 Gauges ships an update every 3 days, and OBD2 Scanner + Engine Sound every 9 days. Most recently, OBD2 Gauges was updated on October 9, 2026 and OBD2 Scanner + Engine Sound on October 16, 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.*