# Stroop Training vs Dual N

The clearest difference is ads: Dual N at none against Stroop Training's shown. Dual N also leads on update cadence (every 2 days vs every 2 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

Stroop Training ships an update every 2 weeks, Dual N every 2 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Stroop Training | Dual N |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.7 (3 ratings)](https://appshunter.io/ios/app/dual-n-back-brain-trainer/id6783484280/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Every 2 days** |
| Monetization | — | Free |
| Size | 28 MB | 26 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [豪 陈](https://appshunter.io/developer/1852919038) | [Ahmed Sayed Mokhtar Mohamed](https://appshunter.io/developer/1470826267) |

## What reviewers say

### Stroop Training

[App page](https://appshunter.io/ios/app/stroop-training-brain-test/id6761408832)

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

**In-app purchases:** none


### Dual N

[App page](https://appshunter.io/ios/app/dual-n-back-brain-trainer/id6783484280)

This app trains your working memory and focus using the scientifically validated n-back task. It presents multiple streams of information, requiring you to match current stimuli with those from N steps prior. The difficulty adapts to your performance, ensuring a challenging yet achievable workout for your brain.

**Highlights:** Dual N-back task training, Adaptive difficulty based on performance, Manual difficulty setting (N=1-9), Multiple stimulus streams (position, audio, color), Progress tracking and statistics, Customizable session settings, Offline functionality

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

**In-app purchases:** none


## Frequently asked questions

### Is Stroop Training free?

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

### Is Dual N free?

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

### Do Stroop Training or Dual N have ads?

Stroop Training shows ads; Dual N does not.

### Which is updated more often, Stroop Training or Dual N?

Stroop Training ships an update every 2 weeks, and Dual N every 2 days. Most recently, Stroop Training was updated on October 24, 2026 and Dual N 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.*