# Ultra Reaction vs RevHeadz Engine Sounds

The clearest difference is ads: Ultra Reaction at none against RevHeadz Engine Sounds's shown. RevHeadz Engine Sounds's advantage is ratings volume (1.4K vs 69) and review sentiment (69% vs 58%). On price, rating, update cadence and in-app purchases there is nothing between them.

Both are free to download. Ultra Reaction sells 2 one-off in-app purchases and RevHeadz Engine Sounds sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Ultra Reaction holds the better App Store score, 4.5 against 4.3. That said, the two scores are not equally well evidenced: RevHeadz Engine Sounds has 1.4K ratings behind it against 69, so its average is the more settled of the two. Written reviews complicate that: 58% of Ultra Reaction's written reviews are positive against 69% of RevHeadz Engine Sounds's, so the app with the better star average is not the one people write more warmly about.

Ultra Reaction ships an update every 5 months, RevHeadz Engine Sounds every 3 months. The most recent releases landed on October 23, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Ultra Reaction | RevHeadz Engine Sounds |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (69 ratings)](https://appshunter.io/ios/app/ultra-reaction/id547207232/reviews)** | [4.3 (1.4K ratings)](https://appshunter.io/ios/app/revheadz-engine-sounds/id793064343/reviews) |
| Number of ratings | 69 | **1.4K** |
| Positive reviews | 58.2% of reviews | **68.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 6 MB | 201 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fabio Bassan](https://appshunter.io/developer/541863498) | [D.S LONG & SOUNDWAVE CONCEPTS PTY. LTD. & C.G WISE](https://appshunter.io/developer/793064346) |

## What reviewers say

### Ultra Reaction

[App page](https://appshunter.io/ios/app/ultra-reaction/id547207232)

Test and improve your reflex speed with this engaging game. Compete across multiple modes, track your progress, and challenge friends to become the ultimate speed champion. It's a fun way to enhance reaction times for various fast-paced activities.

**Highlights:** 3 game modes (responsive, dynamic, endless), 7 difficulty levels, Game Center integration, Leaderboard and achievements, Reaction time training, Improve speed and agility, Enhance concentration and endurance

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $0.99 | one-time |
| Supporter Pack | $0.99 | one-time |


### RevHeadz Engine Sounds

[App page](https://appshunter.io/ios/app/revheadz-engine-sounds/id793064343)

Experience realistic car and motorcycle engine sounds with interactive controls for gears, brakes, and acceleration. Connect to sound systems for an immersive audio experience. Supports OBD2 connectivity for real-time driving simulation.

**Highlights:** Realistic engine sound simulation, Interactive gear, brake, and accelerator controls, OBD2 connectivity for real-time driving, Vast library of car and bike engines, Connect to external sound systems, Detailed mechanical parameter simulation

**Features:** Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Historic Grand Prix Pack | $0.99 | one-time |
| Race Car Pack | $0.99 | one-time |
| Super Car Pack | $0.99 | one-time |
| Street Tuner Pack | $0.99 | one-time |
| Street Bike Pack | $0.99 | one-time |
| Off Road Pack | $0.99 | one-time |
| V8 Thunder Pack | $0.99 | one-time |
| Modern Grand Prix Pack | $0.99 | one-time |
| Import Pack | $0.99 | one-time |
| Classic American Muscle Pack | $0.99 | one-time |

**What reviewers like**

- 🚀 Great game
- 👍 Awesome sounds
- 👍 Realistic engine sounds
- 👍 Fun to use
- 👍 Satisfying experience

**What reviewers complain about**

- 💰 Paid packs required for more content
- 🐛 Connectivity issues with OBD2 adapters
- 🐛 Occasional crashes or bugs
- 🔋 High battery consumption

**Reported bugs**

- Inconsistent RPM/speed detection
- Delayed or unresponsive engine sounds
- Compatibility issues on certain devices
- Startup/shutdown sound not working in OBD2 mode

**Requested features**

- Add more free car sounds
- Include diesel engine sounds
- Implement turbo/supercharger sounds
- Add more JDM and classic car sounds
- Introduce a clutch/manual gearbox feature


## Frequently asked questions

### Is Ultra Reaction free?

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

### Is RevHeadz Engine Sounds free?

RevHeadz Engine Sounds is free to download, with in-app purchases available.

### Which has better reviews, Ultra Reaction or RevHeadz Engine Sounds?

Ultra Reaction is rated higher. Ultra Reaction averages 4.5 out of 5 from 69 ratings, while RevHeadz Engine Sounds averages 4.3 from 1.4K ratings.

### Do Ultra Reaction or RevHeadz Engine Sounds have ads?

RevHeadz Engine Sounds shows ads; Ultra Reaction does not.

### Which is updated more often, Ultra Reaction or RevHeadz Engine Sounds?

Ultra Reaction ships an update every 5 months, and RevHeadz Engine Sounds every 3 months. Most recently, Ultra Reaction was updated on October 23, 2026 and RevHeadz Engine Sounds on October 29, 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.*