# 封印扉ダンジョン：放置RPG vs Kororin Smartball

The clearest difference is in-app purchases: 封印扉ダンジョン：放置RPG at none against Kororin Smartball's 1. 封印扉ダンジョン：放置RPG also leads on update cadence (every 5 days vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Kororin Smartball sells 1 one-off in-app purchase. 封印扉ダンジョン：放置RPG asks for nothing beyond the download.

封印扉ダンジョン：放置RPG ships an update every 5 days, Kororin Smartball fortnightly. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | 封印扉ダンジョン：放置RPG | Kororin Smartball |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 5 days** | Fortnightly |
| Monetization | Ad-supported | — |
| Size | 68 MB | 50 MB |
| Requires iOS | 16.4 | **16.0** |
| Devices | iPhone | iPhone |
| Age rating | 9+ | 4+ |
| Developer | [Tomoya Seki](https://appshunter.io/developer/1832218107) | [Sakagoshi Daichi](https://appshunter.io/developer/6800018069) |

## What reviewers say

### 封印扉ダンジョン：放置RPG

[App page](https://appshunter.io/ios/app/rpg/id6802222336)

Open massive sealed doors with a single tap to discover treasures, enemies, or traps. Decide whether to secure your loot or risk deeper exploration for greater rewards. Strategically upgrade your base and balance idle progression with manual gameplay for the ultimate adventure.

**Highlights:** One-tap door opening, Unpredictable door outcomes, Secure loot or risk deeper dives, Base upgrades (keys, talismans, mechanisms), Automated door opening and discovery, Balance idle and manual play

**In-app purchases:** none


### Kororin Smartball

[App page](https://appshunter.io/ios/app/kororin-smartball/id6815109241)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告非表示 | $2.99 | one-time |


## Frequently asked questions

### Is 封印扉ダンジョン：放置RPG free?

封印扉ダンジョン：放置RPG is free to download, with no in-app purchases.

### Is Kororin Smartball free?

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

### Do 封印扉ダンジョン：放置RPG or Kororin Smartball have ads?

Both 封印扉ダンジョン：放置RPG and Kororin Smartball show ads.

### Which is updated more often, 封印扉ダンジョン：放置RPG or Kororin Smartball?

封印扉ダンジョン：放置RPG ships an update every 5 days, and Kororin Smartball fortnightly. Most recently, 封印扉ダンジョン：放置RPG was updated on October 31, 2026 and Kororin Smartball on November 6, 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.*