# StroopTest vs Phaze

The clearest difference is price: Phaze at Free against StroopTest's $1.99. Phaze also leads on update cadence (every 6 weeks vs every 8 months). StroopTest's advantage is device support (4 vs 2) and iOS requirement (11.0 vs 16.2). On ads and in-app purchases there is nothing between them.

Phaze is free to download; StroopTest costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

StroopTest ships an update every 8 months, Phaze every 6 weeks. The most recent releases landed on August 1, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | StroopTest | Phaze |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/strooptest/id1611350852/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 6 weeks** |
| Monetization | Paid | — |
| Size | 36 MB | 60 MB |
| Requires iOS | **11.0** | 16.2 |
| Devices | **iPhone, iPad, iPod, Apple TV** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Yellow Riders](https://appshunter.io/developer/1209479274) | [Phaze Shift Ltd](https://appshunter.io/developer/1790675234) |

## What reviewers say

### StroopTest

[App page](https://appshunter.io/ios/app/strooptest/id1611350852)

This app presents a classic psychology test where you identify the color of a word, measuring your reaction time. It offers multilingual support and visualizes your performance over time with graphs.

**Highlights:** Color-word association test, Reaction time measurement, Performance graphing, Multilingual support, Classic psychology experiment

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

**In-app purchases:** none


### Phaze

[App page](https://appshunter.io/ios/app/phaze/id6741365045)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is StroopTest free?

StroopTest costs $1.99, with no in-app purchases.

### Is Phaze free?

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

### Do StroopTest or Phaze have ads?

Neither StroopTest nor Phaze shows ads.

### Which is updated more often, StroopTest or Phaze?

StroopTest ships an update every 8 months, and Phaze every 6 weeks. Most recently, StroopTest was updated on August 1, 2026 and Phaze on September 9, 2026.

---

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