# N vs Onikeisan

The clearest difference is in-app purchases: Onikeisan at none against N's 1. Onikeisan also leads on ads (none vs shown) and iOS requirement (12.0 vs 26.0). On price, update cadence and device support there is nothing between them.

Both are free to download. N sells 1 in-app purchase, starting at $7.49 per month. Onikeisan asks for nothing beyond the download.

N ships an update every 8 days, Onikeisan every 9 days. The most recent releases landed on November 12, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | N | Onikeisan |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 8 days** | Every 9 days |
| Size | 28 MB | 37 MB |
| Requires iOS | 26.0 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [chunson yamada](https://appshunter.io/developer/1538754889) | [iori kojima](https://appshunter.io/developer/1493044568) |

## What reviewers say

### N

[App page](https://appshunter.io/ios/app/n-back-training-mental-math/id1627478554)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| １ヶ月プラン | $7.49 | per month |


### Onikeisan

[App page](https://appshunter.io/ios/app/onikeisan-n-back/id6745093026)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is N free?

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

### Is Onikeisan free?

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

### Do N or Onikeisan have ads?

N shows ads; Onikeisan does not.

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

N ships an update every 8 days, and Onikeisan every 9 days. Most recently, N was updated on November 12, 2026 and Onikeisan on October 30, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*