# Span N vs Dual N

The clearest difference is ads: Span N at none against Dual N's shown. 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.

## The numbers

| Metric | Span N | Dual N |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/span-n-back/id6757405409/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | — | Fortnightly |
| Monetization | Free | — |
| Size | 3 MB | 50 MB |
| Requires iOS | **16.0** | 16.4 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jerzy Plocha](https://appshunter.io/developer/1866656263) | [Positri Ltd](https://appshunter.io/developer/1880354440) |

## What reviewers say

### Span N

[App page](https://appshunter.io/ios/app/span-n-back/id6757405409)

This application offers scientifically-backed cognitive training to enhance working memory and fluid intelligence. It utilizes the dual n-back task to progressively challenge users with visual and auditory stimuli, providing detailed analytics for progress tracking. Designed for daily practice, it aims to sharpen focus and improve mental agility.

**Highlights:** Dual n-back task training, Visual and auditory stimuli, Progressive difficulty levels, Detailed analytics and tracking, Privacy-focused, on-device data, Exportable data (JSON/CSV), Dark mode support

**Features:** macOS Compatibility

**In-app purchases:** none


### Dual N

[App page](https://appshunter.io/ios/app/dual-n-back-by-n-back-lab/id6759723519)

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

**In-app purchases:** none


## Frequently asked questions

### Is Span N free?

Span N 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 Span N or Dual N have ads?

Dual N shows ads; Span N does not.

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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.*