# 封印扉ダンジョン：放置RPG vs マッスルフレンド

The clearest difference is in-app purchases: 封印扉ダンジョン：放置RPG at none against マッスルフレンド's 7. 封印扉ダンジョン：放置RPG also leads on update cadence (every 5 days vs fortnightly). マッスルフレンド's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.4). On price and ads there is nothing between them.

Both are free to download. マッスルフレンド sells 7 one-off in-app purchases. 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, マッスルフレンド fortnightly. The most recent releases landed on October 14, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | 封印扉ダンジョン：放置RPG | マッスルフレンド |
| --- | --- | --- |
| 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 | 17 MB |
| Requires iOS | 16.4 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 9+ | 4+ |
| Developer | [Tomoya Seki](https://appshunter.io/developer/1832218107) | [KOTA KONISHI](https://appshunter.io/developer/6793996414) |

## 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


### マッスルフレンド

[App page](https://appshunter.io/ios/app/id6804350802)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| マッスルガチャ 1回 | $0.99 | one-time |
| 初回限定!SSR顔パーツ確定パック | $0.99 | one-time |
| おにぎり | $0.99 | one-time |
| エナジードリンク | $1.99 | one-time |
| プロテイン | $2.99 | one-time |
| マッスルガチャ 10連 | $5.99 | one-time |
| 特上焼肉セット | $5.99 | 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 マッスルフレンド free?

マッスルフレンド is free to download, with in-app purchases available.

### Do 封印扉ダンジョン：放置RPG or マッスルフレンド have ads?

Both 封印扉ダンジョン：放置RPG and マッスルフレンド show ads.

### Which is updated more often, 封印扉ダンジョン：放置RPG or マッスルフレンド?

封印扉ダンジョン：放置RPG ships an update every 5 days, and マッスルフレンド fortnightly. Most recently, 封印扉ダンジョン：放置RPG was updated on October 14, 2026 and マッスルフレンド on October 19, 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.*