# Stroop Test J Lite vs MATOMEIN

The clearest difference is in-app purchases: Stroop Test J Lite at none against MATOMEIN's 2. Stroop Test J Lite also leads on iOS requirement (17.6 vs 26.2). MATOMEIN's advantage is ads (none vs shown) and update cadence (weekly vs every 36 months). On price and device support there is nothing between them.

Both are free to download. MATOMEIN sells 2 in-app purchases, starting at $5.99 per month. Stroop Test J Lite asks for nothing beyond the download.

Stroop Test J Lite ships an update every 36 months, MATOMEIN weekly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Stroop Test J Lite | MATOMEIN |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 36 months | **Weekly** |
| Monetization | Ad-supported | — |
| Size | 4 MB | 8 MB |
| Requires iOS | **17.6** | 26.2 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Takuya Kawakami](https://appshunter.io/developer/721449462) | [Shuhei Yoshikawa](https://appshunter.io/developer/1887532872) |

## What reviewers say

### Stroop Test J Lite

[App page](https://appshunter.io/ios/app/stroop-test-j-lite/id1095231198)

This app measures response inhibition and attention by presenting a classic cognitive test. It helps assess potential frontal lobe dysfunction and interference processing. Results indicate time taken and errors, with higher scores suggesting greater impairment.

**Highlights:** Response inhibition assessment, Attention division test, Measures time to complete, Counts mistakes, Interference processing evaluation

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

**In-app purchases:** none


### MATOMEIN

[App page](https://appshunter.io/ios/app/matomein/id6761054554)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lightプラン | $5.99 | per month |
| Proプラン | $11.99 | per month |


## Frequently asked questions

### Is Stroop Test J Lite free?

Stroop Test J Lite is free to download, with no in-app purchases.

### Is MATOMEIN free?

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

### Do Stroop Test J Lite or MATOMEIN have ads?

Stroop Test J Lite shows ads; MATOMEIN does not.

### Which is updated more often, Stroop Test J Lite or MATOMEIN?

Stroop Test J Lite ships an update every 36 months, and MATOMEIN weekly. Most recently, Stroop Test J Lite was updated on October 24, 2026 and MATOMEIN on October 25, 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.*