# Stroop Test J vs Vehrdict

The clearest difference is price: Vehrdict at Free against Stroop Test J's $1.99. Vehrdict also leads on update cadence (every 2 months vs every 37 months). Stroop Test J's advantage is iOS requirement (8.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

Vehrdict is free to download; Stroop Test J costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Stroop Test J ships an update every 37 months, Vehrdict every 2 months. The most recent releases landed on September 18, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Stroop Test J | Vehrdict |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/stroop-test-j/id1095221202/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 37 months | **Every 2 months** |
| Monetization | Paid | — |
| Size | 1 MB | 26 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Takuya Kawakami](https://appshunter.io/developer/721449462) | [Bytescribe, Inc.](https://appshunter.io/developer/404689294) |

## What reviewers say

### Stroop Test J

[App page](https://appshunter.io/ios/app/stroop-test-j/id1095221202)

This application administers the Stroop test to assess cognitive functions like response inhibition and attention. It measures performance by timing task completion and counting mistakes, with higher scores indicating greater impairment.

**Highlights:** Administers Stroop test, Measures response inhibition, Assesses attention ability, Records task completion time, Counts mistakes, Reports results for impairment assessment

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

**In-app purchases:** none


### Vehrdict

[App page](https://appshunter.io/ios/app/vehrdict/id6474450593)

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

**In-app purchases:** none


## Frequently asked questions

### Is Stroop Test J free?

Stroop Test J costs $1.99, with no in-app purchases.

### Is Vehrdict free?

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

### Do Stroop Test J or Vehrdict have ads?

Neither Stroop Test J nor Vehrdict shows ads.

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

Stroop Test J ships an update every 37 months, and Vehrdict every 2 months. Most recently, Stroop Test J was updated on September 18, 2026 and Vehrdict on September 19, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*