# NBack 3D vs NBack Buddy

The clearest difference is price: NBack 3D at Free against NBack Buddy's $1.99. NBack Buddy's advantage is in-app purchases (none vs 1) and ads (none vs shown). On rating, ratings volume, device support and iOS requirement there is nothing between them.

NBack 3D is free to download; NBack Buddy costs $1.99 up front. NBack 3D sells 1 one-off in-app purchase. NBack Buddy asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for NBack 3D against 5.0 for NBack Buddy. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

## The numbers

| Metric | NBack 3D | NBack Buddy |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/nback-3d/id1407606652/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/nback-buddy/id6755494958/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 10 months | — |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 5 MB | 35 MB |
| Requires iOS | 15.6 | **14.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yasuyoshi Ota](https://appshunter.io/developer/1500357652) | [Byrt](https://appshunter.io/developer/1084236360) |

## 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 |


### NBack Buddy

[App page](https://appshunter.io/ios/app/nback-buddy/id6755494958)

This app offers scientifically validated training for working memory using the N-Back task. It features multiple stimulus types, adjustable difficulty, and detailed performance tracking in a distraction-free interface.

**Highlights:** N-Back working memory training, Multiple stimulus modalities, Adjustable difficulty levels (1-9 back), Distraction-free interface, Performance tracking and statistics, Data export for research

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

**In-app purchases:** none


## Frequently asked questions

### Is NBack 3D free?

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

### Is NBack Buddy free?

NBack Buddy costs $1.99, with no in-app purchases.

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

NBack 3D and NBack Buddy are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

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

NBack 3D shows ads; NBack Buddy does not.

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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.*