# BrainDojo vs NBack³

The clearest difference is review sentiment: BrainDojo at 100% against NBack³'s 71%. BrainDojo also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. BrainDojo sells 3 in-app purchases, starting at $6.99 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.

BrainDojo ships an update weekly, NBack³ every 4 days. The most recent releases landed on August 13, 2026 and August 14, 2026 respectively.

## The numbers

| Metric | BrainDojo | NBack³ |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **100.0% of 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 | Free with in-app purchases |
| Size | 268 MB | 20 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [StudyX G.K.](https://appshunter.io/developer/1451314118) | [Taiki Nishimura](https://appshunter.io/developer/1780302048) |

## What reviewers say

### BrainDojo

[App page](https://appshunter.io/ios/app/braindojo-adhd-brain-training/id6739862455)

Engage in daily brain training activities like handwriting and reading aloud to boost focus and cognitive skills. Suitable for all ages, this app offers fun, effective exercises with new content added monthly.

**Highlights:** Handwriting exercises, Reading aloud practice, Calculation activities, Focus improvement, Memory enhancement, New content monthly

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BrainDojo Plus | $6.99 | per month |
| BrainDojo Plus | $39.99 | per year |
| Tip | $0.99 | one-time |


### 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 BrainDojo free?

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

### Is NBack³ free?

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

### Do BrainDojo or NBack³ have ads?

Both BrainDojo and NBack³ show ads.

### Which is updated more often, BrainDojo or NBack³?

BrainDojo ships an update weekly, and NBack³ every 4 days. Most recently, BrainDojo was updated on August 13, 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.*