# NBackCalc vs N

The clearest difference is in-app purchases: N at none against NBackCalc's 1. NBackCalc's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. NBackCalc sells 1 one-off in-app purchase. N asks for nothing beyond the download.

NBackCalc ships an update every 2 days, N every 3 days. The most recent releases landed on October 1, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | NBackCalc | N |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Every 3 days |
| Size | 1 MB | 5 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [YOSHINORI KONNO](https://appshunter.io/developer/1883074860) | [Toru Fukui](https://appshunter.io/developer/1888097145) |

## What reviewers say

### NBackCalc

[App page](https://appshunter.io/ios/app/nbackcalc-working-memory/id6760832395)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 開発者を応援する | $0.99 | one-time |


### N

[App page](https://appshunter.io/ios/app/n-back-brain-trainer/id6761675343)

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

**In-app purchases:** none


## Frequently asked questions

### Is NBackCalc free?

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

### Is N free?

N is free to download, with no in-app purchases.

### Do NBackCalc or N have ads?

N shows ads; NBackCalc does not.

### Which is updated more often, NBackCalc or N?

NBackCalc ships an update every 2 days, and N every 3 days. Most recently, NBackCalc was updated on October 1, 2026 and N on October 11, 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.*