# Instinct vs Reaction Lab

The clearest difference is in-app purchases: Instinct at none against Reaction Lab's 2. Instinct also leads on update cadence (every 5 days vs every 7 months). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Reaction Lab sells 2 in-app purchases, starting at $1.99 per month. Instinct asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Instinct against 5.0 for Reaction Lab. Both are backed by a comparable volume of ratings — 3 and 2 respectively.

Instinct ships an update every 5 days, Reaction Lab every 7 months. The most recent releases landed on October 24, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Instinct | Reaction Lab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/instinct-reaction-time-tests/id6745971089/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/reaction-lab-reflex-tests/id6757831974/reviews) |
| Number of ratings | **3** | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 7 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 2 MB | 22 MB |
| Requires iOS | 18.2 | **18.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Jasper Cheyney](https://appshunter.io/developer/1814666512) | [Anthony Harvey](https://appshunter.io/developer/1478197285) |

## What reviewers say

### Instinct

[App page](https://appshunter.io/ios/app/instinct-reaction-time-tests/id6745971089)

Enhance your reaction time, reflexes, and cognitive speed with engaging, fast-paced games. Track your progress with detailed graphs, compete with friends on global leaderboards, and unlock achievements. Designed for quick daily mental agility training.

**Highlights:** Reaction Speed game, Turbo Tap challenge, Aim Training mode, Unlockable awards, Game Center leaderboards, Progress tracking graphs

**Features:** macOS Compatibility

**In-app purchases:** none


### Reaction Lab

[App page](https://appshunter.io/ios/app/reaction-lab-reflex-tests/id6757831974)

Measure and improve your response speed with a suite of scientifically-inspired tests. Track progress over time with detailed analytics and gain insights into your performance in various situations. Designed for focus and privacy, all data stays on your device.

**Highlights:** Multiple reaction time test types, Visual, audio, and haptic cues, Grip-release and motion-based tests, Dual-task and fatigue tracking, Detailed session summaries and trend charts, On-device data privacy, Offline functionality

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| React Fast Monthly | $1.99 | per month |
| React Fast Yearly | $4.99 | per year |


## Frequently asked questions

### Is Instinct free?

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

### Is Reaction Lab free?

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

### Which has better reviews, Instinct or Reaction Lab?

Instinct and Reaction Lab are both rated 5.0 out of 5 on the App Store, from 3 and 2 ratings respectively.

### Do Instinct or Reaction Lab have ads?

Neither Instinct nor Reaction Lab shows ads.

### Which is updated more often, Instinct or Reaction Lab?

Instinct ships an update every 5 days, and Reaction Lab every 7 months. Most recently, Instinct was updated on October 24, 2026 and Reaction Lab on October 12, 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.*