# Race Start Test vs Invisible Danger

The clearest difference is in-app purchases: Invisible Danger at none against Race Start Test's 4. Race Start Test's advantage is iOS requirement (12.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Race Start Test sells 4 one-off in-app purchases. Invisible Danger asks for nothing beyond the download.

## The numbers

| Metric | Race Start Test | Invisible Danger |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (247 ratings)](https://appshunter.io/ios/app/race-start-test-formula-reflex/id1531663134/reviews)** | — |
| Number of ratings | **247** | — |
| Positive reviews | 46.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | — |
| Monetization | Ad-supported | — |
| Size | 30 MB | 138 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Omer Sina Ceylan](https://appshunter.io/developer/1525846745) | [Ramazan • US](https://appshunter.io/developer/6809152351) |

## What reviewers say

### Race Start Test

[App page](https://appshunter.io/ios/app/race-start-test-formula-reflex/id1531663134)

Sharpen your Formula Grand Prix starting reflexes. Click as fast as possible to achieve optimal race starts and improve your reaction time. Compete against global racers and enhance your overall reflex skills.

**Highlights:** Formula Grand Prix reflex testing, Fastest click response, Improve race start skills, Global leaderboards, Enhance reflex abilities

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 2500 Coin | $0.99 | one-time |
| Remove Ads | $0.99 | one-time |
| 7500 Coin | $1.99 | one-time |
| 25000 Coin | $4.99 | one-time |

**What reviewers like**

- 🎮 Fun and engaging gameplay mechanics
- 👥 Great for competitive play with friends and family
- 🧠 Effective reaction time training tool
- ⭐ Licensed F1 driver endorsement (Max Verstappen)
- 💰 Affordable pricing with optional cosmetics

**What reviewers complain about**

- 🐛 Reload/restart button frequently doesn't work
- 🐛 Tap detection issues and unresponsive clicks
- 💸 Paywall at challenge 7 restricts content
- 🐛 App crashes after completing rounds
- 🐛 UI element positioning issues after updates

**Reported bugs**

- Reload button doesn't work - requires app restart
- Tap/click input not registered consistently
- App freezes and becomes unresponsive
- App crashes after each attempt
- Wheel UI element positioned incorrectly after update

**Requested features**

- Reset high score button without losing progress
- Ability to click anywhere on screen to stop timer
- Settings tab for customization options
- Adjustable light speed difficulty settings
- Hide earned coins display option


### Invisible Danger

[App page](https://appshunter.io/ios/app/invisible-danger/id6809152349)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Race Start Test free?

Race Start Test is free to download, with in-app purchases available.

### Is Invisible Danger free?

Invisible Danger is free to download, with no in-app purchases.

### Do Race Start Test or Invisible Danger have ads?

Both Race Start Test and Invisible Danger show ads.

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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.*