# iStroopChallenge vs Cognitive Challenge

The clearest difference is ads: iStroopChallenge at none against Cognitive Challenge's shown. iStroopChallenge also leads on update cadence (every 5 days vs every 2 months) and monetization model (free vs ad-supported). On price, rating, ratings volume and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for iStroopChallenge against 5.0 for Cognitive Challenge. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

iStroopChallenge ships an update every 5 days, Cognitive Challenge every 2 months. The most recent releases landed on September 10, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | iStroopChallenge | Cognitive Challenge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/istroopchallenge/id6755783575/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/cognitive-challenge/id6764170208/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Every 2 months |
| Monetization | **Free** | Ad-supported |
| Size | 25 MB | 40 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Steve Hunger](https://appshunter.io/developer/1840531947) | [Boolean Bros LLC](https://appshunter.io/developer/1890936797) |

## What reviewers say

### iStroopChallenge

[App page](https://appshunter.io/ios/app/istroopchallenge/id6755783575)

Engage in a classic psychological test transformed into an addictive mobile game. Challenge your cognitive speed by identifying ink colors, not word meanings, in a fun and effective brain training experience.

**Highlights:** Timed and endless game modes, Adaptive difficulty settings, Multiplayer challenges, Achievements and leaderboards, Color blind accessibility, Multiple themes, Detailed statistics

**Features:** macOS Compatibility

**In-app purchases:** none


### Cognitive Challenge

[App page](https://appshunter.io/ios/app/cognitive-challenge/id6764170208)

This fast-paced game challenges your focus, reaction speed, and cognitive flexibility. Compete against your own scores and track your improvement with each session. It's designed to help you sharpen your mind through engaging gameplay.

**Highlights:** Focus testing, Reaction speed challenges, Cognitive flexibility exercises, Self-competition, Performance improvement tracking

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

**In-app purchases:** none


## Frequently asked questions

### Is iStroopChallenge free?

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

### Is Cognitive Challenge free?

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

### Which has better reviews, iStroopChallenge or Cognitive Challenge?

iStroopChallenge and Cognitive Challenge are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do iStroopChallenge or Cognitive Challenge have ads?

Cognitive Challenge shows ads; iStroopChallenge does not.

### Which is updated more often, iStroopChallenge or Cognitive Challenge?

iStroopChallenge ships an update every 5 days, and Cognitive Challenge every 2 months. Most recently, iStroopChallenge was updated on September 10, 2026 and Cognitive Challenge on September 14, 2026.

---

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