# PASSCODES vs Onikeisan

The clearest difference is ads: Onikeisan at none against PASSCODES's shown. Onikeisan also leads on update cadence (every 9 days vs every 2 months) and iOS requirement (12.0 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PASSCODES ships an update every 2 months, Onikeisan every 9 days. The most recent releases landed on October 27, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | PASSCODES | Onikeisan |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 9 days** |
| Size | 16 MB | 37 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KENICHI YAMAMOTO](https://appshunter.io/developer/1335325739) | [iori kojima](https://appshunter.io/developer/1493044568) |

## What reviewers say

### PASSCODES

[App page](https://appshunter.io/ios/app/passcodes/id6737499782)

**Features:** macOS Compatibility

**In-app purchases:** none


### Onikeisan

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PASSCODES free?

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

### Is Onikeisan free?

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

### Do PASSCODES or Onikeisan have ads?

PASSCODES shows ads; Onikeisan does not.

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

PASSCODES ships an update every 2 months, and Onikeisan every 9 days. Most recently, PASSCODES was updated on October 27, 2026 and Onikeisan on October 30, 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.*