# 理牌無用 vs Ruin Dive

The clearest difference is in-app purchases: 理牌無用 at none against Ruin Dive's 1. Ruin Dive's advantage is update cadence (every 10 days vs every 7 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Ruin Dive sells 1 one-off in-app purchase. 理牌無用 asks for nothing beyond the download.

理牌無用 ships an update every 7 months, Ruin Dive every 10 days. The most recent releases landed on October 16, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | 理牌無用 | Ruin Dive |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 7 months | **Every 10 days** |
| Size | 14 MB | 42 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Saki Inoue](https://appshunter.io/developer/1557109246) | [Shimmoto Kotaro](https://appshunter.io/developer/6782057086) |

## What reviewers say

### 理牌無用

[App page](https://appshunter.io/ios/app/id6449622992)

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

**In-app purchases:** none


### Ruin Dive

[App page](https://appshunter.io/ios/app/ruin-dive/id6782057084)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告を削除 | $2.99 | one-time |


## Frequently asked questions

### Is 理牌無用 free?

理牌無用 is free to download, with no in-app purchases.

### Is Ruin Dive free?

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

### Do 理牌無用 or Ruin Dive have ads?

Both 理牌無用 and Ruin Dive show ads.

### Which is updated more often, 理牌無用 or Ruin Dive?

理牌無用 ships an update every 7 months, and Ruin Dive every 10 days. Most recently, 理牌無用 was updated on October 16, 2026 and Ruin Dive on October 3, 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.*