# NBack³ vs MASTER COURSE Mgr

The clearest difference is in-app purchases: MASTER COURSE Mgr at none against NBack³'s 1. MASTER COURSE Mgr also leads on ads (none vs shown) and iOS requirement (15.6 vs 17.0). On price, update cadence and device support there is nothing between them.

Both are free to download. NBack³ sells 1 in-app purchase, starting at $0.49 per month. MASTER COURSE Mgr asks for nothing beyond the download.

NBack³ ships an update every 4 days, MASTER COURSE Mgr weekly. The most recent releases landed on October 7, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | NBack³ | MASTER COURSE Mgr |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 71.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Weekly |
| Monetization | Free with in-app purchases | — |
| Size | 20 MB | 46 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Taiki Nishimura](https://appshunter.io/developer/1780302048) | [Morrow World Inc.](https://appshunter.io/developer/1552662827) |

## What reviewers say

### NBack³

[App page](https://appshunter.io/ios/app/nback-memory-training-game/id6745750227)

This brain training app uses the scientifically proven Dual N-Back method to enhance cognitive functions like working memory, focus, and decision-making. It offers adjustable difficulty levels and tracks progress with a visually engaging interface.

**Highlights:** Dual N-Back method, Adjustable difficulty (n=1-5), Enhances working memory, Improves inhibitory control, Develops attention skills, Progress tracking, Streak bonus system

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアムプラン | $0.49 | per month |


### MASTER COURSE Mgr

[App page](https://appshunter.io/ios/app/master-course-mgr/id6793829259)

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

**In-app purchases:** none


## Frequently asked questions

### Is NBack³ free?

NBack³ is free to download, with in-app purchases available.

### Is MASTER COURSE Mgr free?

MASTER COURSE Mgr is free to download, with no in-app purchases.

### Do NBack³ or MASTER COURSE Mgr have ads?

NBack³ shows ads; MASTER COURSE Mgr does not.

### Which is updated more often, NBack³ or MASTER COURSE Mgr?

NBack³ ships an update every 4 days, and MASTER COURSE Mgr weekly. Most recently, NBack³ was updated on October 7, 2026 and MASTER COURSE Mgr on October 29, 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.*