# NBack vs Span N

The clearest difference is in-app purchases: Span N at none against NBack's 2. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. NBack sells 2 in-app purchases, starting at $1.99 per month. Span N asks for nothing beyond the download.

## The numbers

| Metric | NBack | Span N |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/nback-boost-iq/id6743346501/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Freemium | — |
| Size | 44 MB | 3 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [eric cesar](https://appshunter.io/developer/1783301800) | [Jerzy Plocha](https://appshunter.io/developer/1866656263) |

## What reviewers say

### NBack

[App page](https://appshunter.io/ios/app/nback-boost-iq/id6743346501)

This scientifically validated cognitive training app is designed to enhance focus, memory, and problem-solving skills. It utilizes the dual n-back method, proven to increase fluid intelligence, offering a challenging yet rewarding experience for those seeking mental improvement.

**Highlights:** Scientifically validated cognitive training, Dual n-back method for fluid intelligence, Boosts memory and focus, Enhances problem-solving skills, Progress tracking with data-backed gains, Customizable user experience

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly membership | $1.99 | per month |
| Yearly membership | $14.99 | per year |


### Span N

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NBack free?

NBack is free to download, with in-app purchases available.

### Is Span N free?

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

### Do NBack or Span N have ads?

Neither NBack nor Span N shows ads.

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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.*