# NBack vs Zen Walk

The clearest difference is update cadence: Zen Walk at every 10 days against NBack's every 2 months. NBack's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 18.5). On price, ads and in-app purchases there is nothing between them.

Both are free to download. NBack sells 2 in-app purchases, starting at $1.99 per month and Zen Walk sells 1 in-app purchase, starting at $1.99 per 2 months. Whichever you choose, the download price is not the number that matters.

NBack ships an update every 2 months, Zen Walk every 10 days. The most recent releases landed on October 11, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | NBack | Zen Walk |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/nback-boost-iq/id6743346501/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 10 days** |
| Monetization | Freemium | — |
| Size | 44 MB | 9 MB |
| Requires iOS | **15.1** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [eric cesar](https://appshunter.io/developer/1783301800) | [Takumi Nakayama](https://appshunter.io/developer/1826288331) |

## What reviewers say

### NBack

[App page](https://appshunter.io/ios/app/nback-boost-iq/id6743346501)

This scientifically validated cognitive training app is designed to enhance focus, memory, and problem-solving skills. It utilizes the dual n-back method, proven to increase fluid intelligence, offering a challenging yet rewarding experience for those seeking mental improvement.

**Highlights:** Scientifically validated cognitive training, Dual n-back method for fluid intelligence, Boosts memory and focus, Enhances problem-solving skills, Progress tracking with data-backed gains, Customizable user experience

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly membership | $1.99 | per month |
| Yearly membership | $14.99 | per year |


### Zen Walk

[App page](https://appshunter.io/ios/app/zen-walk/id6748559979)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premier Access | $1.99 | per 2 months |


## Frequently asked questions

### Is NBack free?

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

### Is Zen Walk free?

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

### Do NBack or Zen Walk have ads?

Neither NBack nor Zen Walk shows ads.

### Which is updated more often, NBack or Zen Walk?

NBack ships an update every 2 months, and Zen Walk every 10 days. Most recently, NBack was updated on October 11, 2026 and Zen Walk on October 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.*