# Mathematical N vs NBack 3D

The clearest difference is ads: Mathematical N at none against NBack 3D's shown. Mathematical N also leads on ratings volume (85 vs 1) and iOS requirement (13.0 vs 15.6). NBack 3D's advantage is rating (5.0 vs 4.7) and review sentiment (100% vs 81%). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. Mathematical N sells 1 one-off in-app purchase and NBack 3D sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

NBack 3D holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Mathematical N has 85 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 81% of Mathematical N's written reviews are positive against 100% of NBack 3D's.

Mathematical N ships an update every 8 months, NBack 3D every 10 months. The most recent releases landed on October 17, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Mathematical N | NBack 3D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (85 ratings)](https://appshunter.io/ios/app/mathematical-n-back/id1298836462/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/nback-3d/id1407606652/reviews)** |
| Number of ratings | **85** | 1 |
| Positive reviews | 81.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 8 months** | Every 10 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 28 MB | 5 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [William Mahoney](https://appshunter.io/developer/1124295006) | [Yasuyoshi Ota](https://appshunter.io/developer/1500357652) |

## What reviewers say

### Mathematical N

[App page](https://appshunter.io/ios/app/mathematical-n-back/id1298836462)

This app offers a comprehensive mathematical n-back training experience. Users can select from various arithmetic operations or a mixed mode for increased difficulty. Track your performance with detailed charts and compete with others on leaderboards.

**Highlights:** Multiple arithmetic operations (add, subtract, multiply), Mixed operation mode for advanced challenge, Timed games to beat personal bests, Progress tracking with charts, Global leaderboards for competition

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version | $3.99 | one-time |


### 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 |


## Frequently asked questions

### Is Mathematical N free?

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

### Is NBack 3D free?

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

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

NBack 3D is rated higher. Mathematical N averages 4.7 out of 5 from 85 ratings, while NBack 3D averages 5.0 from 1 ratings.

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

NBack 3D shows ads; Mathematical N does not.

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

Mathematical N ships an update every 8 months, and NBack 3D every 10 months. Most recently, Mathematical N was updated on October 17, 2026 and NBack 3D on October 3, 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.*