# PASSCODES vs 不定方程式ガチャ

The clearest difference is price: PASSCODES at Free against 不定方程式ガチャ's $3.99. 不定方程式ガチャ's advantage is ads (none vs shown) and update cadence (every 11 days vs every 2 months). On in-app purchases, device support and iOS requirement there is nothing between them.

PASSCODES is free to download; 不定方程式ガチャ costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PASSCODES ships an update every 2 months, 不定方程式ガチャ every 11 days. The most recent releases landed on November 9, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | PASSCODES | 不定方程式ガチャ |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 11 days** |
| Size | 16 MB | 11 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [KENICHI YAMAMOTO](https://appshunter.io/developer/1335325739) | [Akira Hiraoka](https://appshunter.io/developer/1668714727) |

## What reviewers say

### PASSCODES

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

**Features:** macOS Compatibility

**In-app purchases:** none


### 不定方程式ガチャ

[App page](https://appshunter.io/ios/app/id6757098537)

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

**In-app purchases:** none


## Frequently asked questions

### Is PASSCODES free?

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

### Is 不定方程式ガチャ free?

不定方程式ガチャ costs $3.99, with no in-app purchases.

### Do PASSCODES or 不定方程式ガチャ have ads?

PASSCODES shows ads; 不定方程式ガチャ does not.

### Which is updated more often, PASSCODES or 不定方程式ガチャ?

PASSCODES ships an update every 2 months, and 不定方程式ガチャ every 11 days. Most recently, PASSCODES was updated on November 9, 2026 and 不定方程式ガチャ on November 5, 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.*