# NBack³ vs Ultra N Back

NBack³ and Ultra N Back are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. NBack³ sells 1 in-app purchase, starting at $0.49 per month and Ultra N Back sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on August 14, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | NBack³ | Ultra N Back |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 71.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 4 days | Every 4 days |
| Monetization | Free with in-app purchases | — |
| Size | 20 MB | 57 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Taiki Nishimura](https://appshunter.io/developer/1780302048) | [Ayumu Kawahara](https://appshunter.io/developer/1835186601) |

## 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 |


### Ultra N Back

[App page](https://appshunter.io/ios/app/ultra-n-back-brain-training/id6751448185)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Plan | $0.99 | per month |
| Unlimited Plan | $1.99 | per month |


## Frequently asked questions

### Is NBack³ free?

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

### Is Ultra N Back free?

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

### Do NBack³ or Ultra N Back have ads?

Both NBack³ and Ultra N Back show ads.

### Which is updated more often, NBack³ or Ultra N Back?

NBack³ ships an update every 4 days, and Ultra N Back every 4 days. Most recently, NBack³ was updated on August 14, 2026 and Ultra N Back on September 8, 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.*