# NBack Buddy vs Circuit Design

The clearest difference is price: Circuit Design at Free against NBack Buddy's $1.99. NBack Buddy's advantage is in-app purchases (none vs 3) and iOS requirement (14.1 vs 17.0). On ads and device support there is nothing between them.

Circuit Design is free to download; NBack Buddy costs $1.99 up front. Circuit Design sells 3 in-app purchases, starting at $7.99 per month. NBack Buddy asks for nothing beyond the download.

## The numbers

| Metric | NBack Buddy | Circuit Design |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/nback-buddy/id6755494958/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 months |
| Monetization | Paid | — |
| Size | 35 MB | 5 MB |
| Requires iOS | **14.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Byrt](https://appshunter.io/developer/1084236360) | [Tu Anh Do](https://appshunter.io/developer/738947045) |

## What reviewers say

### 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


### Circuit Design

[App page](https://appshunter.io/ios/app/circuit-design/id6776538242)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Circuit Design Premium Monthly | $7.99 | per month |
| Circuit Design Premium Yearly | $29.99 | per year |
| Circuit Design Premium Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is NBack Buddy free?

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

### Is Circuit Design free?

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

### Do NBack Buddy or Circuit Design have ads?

Neither NBack Buddy nor Circuit Design shows ads.

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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.*