# NBack 3D vs N

The clearest difference is review sentiment: NBack 3D at 100% against N's 50%. NBack 3D also leads on rating (5.0 vs 4.0). N's advantage is ads (none vs shown) and update cadence (every 6 days vs every 10 months). On price, ratings volume, in-app purchases and device support there is nothing between them.

Both are free to download. NBack 3D sells 1 one-off in-app purchase and N sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

NBack 3D holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews point the same way: 100% of NBack 3D's written reviews are positive against 50% of N's.

NBack 3D ships an update every 10 months, N every 6 days. The most recent releases landed on October 27, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | NBack 3D | N |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/nback-3d/id1407606652/reviews)** | [4.0 (2 ratings)](https://appshunter.io/ios/app/n-back-brain-training-game/id6758106551/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 10 months | **Every 6 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 5 MB | 37 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yasuyoshi Ota](https://appshunter.io/developer/1500357652) | [AHMET EMRE DEDELER](https://appshunter.io/developer/1870913629) |

## What reviewers say

### NBack 3D

[App page](https://appshunter.io/ios/app/nback-3d/id1407606652)

This app challenges your memory by requiring you to count 3D shapes of specific colors. As the 'N' value increases, the difficulty escalates, testing your ability to recall past stimuli in a sequence.

**Highlights:** N-Back memory challenge, 3D shape and color recognition, Increasing difficulty levels, Sequence memorization, Cognitive skill enhancement

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Extend to 20'Back & Remove Ads | $2.99 | one-time |


### 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 NBack 3D free?

NBack 3D is free to download, with in-app purchases available.

### Is N free?

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

### Which has better reviews, NBack 3D or N?

NBack 3D is rated higher. NBack 3D averages 5.0 out of 5 from 1 ratings, while N averages 4.0 from 2 ratings.

### Do NBack 3D or N have ads?

NBack 3D shows ads; N does not.

### Which is updated more often, NBack 3D or N?

NBack 3D ships an update every 10 months, and N every 6 days. Most recently, NBack 3D was updated on October 27, 2026 and N on October 18, 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.*