# Reaction Time vs 1/2 one

The clearest difference is update cadence: Reaction Time at fortnightly against 1/2 one's every 2 months. Reaction Time also leads on review sentiment (68% vs 50%). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Reaction Time ships an update fortnightly, 1/2 one every 2 months. The most recent releases landed on November 7, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Reaction Time | 1/2 one |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/reaction-time-tap-test/id1580161727/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | **68.1% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Ad-supported | Ad-supported |
| Size | 60 MB | 49 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Osawa Shunsuke](https://appshunter.io/developer/477431394) | [gravass, Inc.](https://appshunter.io/developer/1527714391) |

## What reviewers say

### Reaction Time

[App page](https://appshunter.io/ios/app/reaction-time-tap-test/id1580161727)

Test and train your reflexes with various game modes. Compete globally in periodic rankings to become the world champion. Ideal for improving reaction speed for emergencies.

**Highlights:** One-shot reflex games, Random appearance challenges, 3 consecutive reflex tests, Global player rankings, Periodic ranking resets, Reflex training for emergencies

**Features:** Vision Pro support

**In-app purchases:** none


### 1/2 one

[App page](https://appshunter.io/ios/app/12-one-half/id6526470967)

Test your luck and strategy in this simple guessing game. Aim for consecutive correct answers with a 50/50 chance, and track your progress. You get one chance to redo a selection per streak.

**Highlights:** 50/50 guessing mechanic, Consecutive correct answer tracking, Single redo per streak, Probability display, Simple L/R choices

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

**In-app purchases:** none


## Frequently asked questions

### Is Reaction Time free?

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

### Is 1/2 one free?

1/2 one is free to download, with no in-app purchases.

### Do Reaction Time or 1/2 one have ads?

Both Reaction Time and 1/2 one show ads.

### Which is updated more often, Reaction Time or 1/2 one?

Reaction Time ships an update fortnightly, and 1/2 one every 2 months. Most recently, Reaction Time was updated on November 7, 2026 and 1/2 one on November 4, 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.*