# Stroop Test J Lite vs EYES!

The clearest difference is in-app purchases: Stroop Test J Lite at none against EYES!'s 1. EYES!'s advantage is ads (none vs shown) and update cadence (every 4 days vs every 36 months). On price and device support there is nothing between them.

Both are free to download. EYES! sells 1 in-app purchase, starting at $5.99 per year. Stroop Test J Lite asks for nothing beyond the download.

Stroop Test J Lite ships an update every 36 months, EYES! every 4 days. The most recent releases landed on October 24, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Stroop Test J Lite | EYES! |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 36 months | **Every 4 days** |
| Monetization | Ad-supported | — |
| Size | 4 MB | 99 MB |
| Requires iOS | 17.6 | **12.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Takuya Kawakami](https://appshunter.io/developer/721449462) | [TNQ Tech, Co.](https://appshunter.io/developer/1817559824) |

## 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


### EYES!

[App page](https://appshunter.io/ios/app/eyes/id6748371263)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yearly Plan | $5.99 | per year |


## Frequently asked questions

### Is Stroop Test J Lite free?

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

### Is EYES! free?

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

### Do Stroop Test J Lite or EYES! have ads?

Stroop Test J Lite shows ads; EYES! does not.

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

Stroop Test J Lite ships an update every 36 months, and EYES! every 4 days. Most recently, Stroop Test J Lite was updated on October 24, 2026 and EYES! on October 7, 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.*