# Учебник Docker vs N

The clearest difference is in-app purchases: Учебник Docker at none against N's 3. N's advantage is update cadence (every 6 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. N sells 3 in-app purchases, starting at $1.99 per 7 days. Учебник Docker asks for nothing beyond the download.

Учебник Docker ships an update every 2 months, N every 6 days. The most recent releases landed on October 8, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Учебник Docker | N |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (2 ratings)](https://appshunter.io/ios/app/n-back-brain-training-game/id6758106551/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | — | Free |
| Size | 19 MB | 37 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mikhail Shmarov](https://appshunter.io/developer/1715239557) | [AHMET EMRE DEDELER](https://appshunter.io/developer/1870913629) |

## What reviewers say

### Учебник Docker

[App page](https://appshunter.io/ios/app/docker/id6742394168)

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

**In-app purchases:** none


### N

[App page](https://appshunter.io/ios/app/n-back-brain-training-game/id6758106551)

This app uses the scientifically validated Dual N-Back task to enhance working memory and focus. It offers a structured challenge, detailed statistics, and adaptive difficulty to improve cognitive abilities. Designed for students, professionals, or anyone seeking mental fitness.

**Highlights:** Dual N-Back task for cognitive enhancement, 20-Day structured habit-building challenge, Detailed progress tracking with charts and heatmaps, Practice mode with customizable N-levels, Adaptive difficulty that adjusts to user performance, Distraction-free, dark-mode design

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| N-Back Pro Weekly | $1.99 | per 7 days |
| N-Back Pro Monthly | $2.99 | per month |
| N-Back Pro Yearly | $24.99 | per year |


## Frequently asked questions

### Is Учебник Docker free?

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

### Is N free?

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

### Do Учебник Docker or N have ads?

Neither Учебник Docker nor N shows ads.

### Which is updated more often, Учебник Docker or N?

Учебник Docker ships an update every 2 months, and N every 6 days. Most recently, Учебник Docker was updated on October 8, 2026 and N on October 1, 2026.

---

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