# Reaction Time vs WorldCrush

The clearest difference is in-app purchases: WorldCrush at none against Reaction Time's 1. WorldCrush also leads on update cadence (daily vs every 2 months). Reaction Time's advantage is device support (5 vs 1) and iOS requirement (15.6 vs 17.0). On price and ads there is nothing between them.

Both are free to download. Reaction Time sells 1 one-off in-app purchase. WorldCrush asks for nothing beyond the download.

Reaction Time ships an update every 2 months, WorldCrush daily. The most recent releases landed on October 6, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Reaction Time | WorldCrush |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Daily** |
| Size | 10 MB | 10 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac, Apple TV** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [KidDotCo](https://appshunter.io/developer/819246599) | [PEDRO CARRASCO LOPEZ BREA](https://appshunter.io/developer/1877866780) |

## What reviewers say

### Reaction Time

[App page](https://appshunter.io/ios/app/reaction-time-tap-zero-zero/id1090740861)

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Can You Find The Cheese? | $1.99 | one-time |


### WorldCrush

[App page](https://appshunter.io/ios/app/worldcrush/id6759285883)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Reaction Time free?

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

### Is WorldCrush free?

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

### Do Reaction Time or WorldCrush have ads?

Neither Reaction Time nor WorldCrush shows ads.

### Which is updated more often, Reaction Time or WorldCrush?

Reaction Time ships an update every 2 months, and WorldCrush daily. Most recently, Reaction Time was updated on October 6, 2026 and WorldCrush on September 30, 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.*