# Schulte Grid vs Reaction Time

The clearest difference is update cadence: Reaction Time at weekly against Schulte Grid's every 5 weeks. Schulte Grid's advantage is iOS requirement (16.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Schulte Grid sells 1 one-off in-app purchase and Reaction Time sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Schulte Grid ships an update every 5 weeks, Reaction Time weekly. The most recent releases landed on October 17, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Schulte Grid | Reaction Time |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 5 weeks | **Weekly** |
| Size | 6 MB | 20 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [景珂 陈](https://appshunter.io/developer/620312170) | [Songyu Li](https://appshunter.io/developer/1228658214) |

## What reviewers say

### Schulte Grid

[App page](https://appshunter.io/ios/app/schulte-grid-focus-training/id777206931)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $1.99 | one-time |


### Reaction Time

[App page](https://appshunter.io/ios/app/reaction-time-test-and-training/id6544800564)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Pass | $0.99 | one-time |


## Frequently asked questions

### Is Schulte Grid free?

Schulte Grid is free to download, with in-app purchases available.

### Is Reaction Time free?

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

### Do Schulte Grid or Reaction Time have ads?

Both Schulte Grid and Reaction Time show ads.

### Which is updated more often, Schulte Grid or Reaction Time?

Schulte Grid ships an update every 5 weeks, and Reaction Time weekly. Most recently, Schulte Grid was updated on October 17, 2026 and Reaction Time on October 13, 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.*