# Brain Forest vs NBack³

The clearest difference is iOS requirement: Brain Forest at 12.0 against NBack³'s 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Brain Forest sells 2 in-app purchases, starting at $3.00 per month and NBack³ sells 1 in-app purchase, starting at $0.49 per month. Whichever you choose, the download price is not the number that matters.

Brain Forest ships an update weekly, NBack³ every 4 days. The most recent releases landed on September 12, 2026 and August 14, 2026 respectively.

## The numbers

| Metric | Brain Forest | NBack³ |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 71.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Weekly | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 57 MB | 20 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SHOGO YOSHIDA](https://appshunter.io/developer/1713295271) | [Taiki Nishimura](https://appshunter.io/developer/1780302048) |

## What reviewers say

### Brain Forest

[App page](https://appshunter.io/ios/app/brain-forest-brain-game/id6651830280)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Brain Forest Premium (Monthly) | $3.00 | per month |
| Brain Forest Premium (Annual) | $18.00 | per year |


### 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 |


## Frequently asked questions

### Is Brain Forest free?

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

### Is NBack³ free?

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

### Do Brain Forest or NBack³ have ads?

Both Brain Forest and NBack³ show ads.

### Which is updated more often, Brain Forest or NBack³?

Brain Forest ships an update weekly, and NBack³ every 4 days. Most recently, Brain Forest was updated on September 12, 2026 and NBack³ on August 14, 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.*