# Castle Bravo vs 灰宮村

The clearest difference is iOS requirement: Castle Bravo at 15.0 against 灰宮村's 18.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Castle Bravo ships an update every 2 weeks, 灰宮村 every 10 days. The most recent releases landed on October 13, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Castle Bravo | 灰宮村 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 2 weeks | **Every 10 days** |
| Monetization | Ad-supported | — |
| Size | 15 MB | 17 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 9+ |
| Developer | [Blyts](https://appshunter.io/developer/454180365) | [Eiki Ogawa](https://appshunter.io/developer/1701253076) |

## What reviewers say

### Castle Bravo

[App page](https://appshunter.io/ios/app/castle-bravo/id6792818574)

Experience a conspiracy thriller where characters text you, send multimedia, and react to your free-form responses. This interactive story blends declassified nuclear test records with immersive fiction, allowing your conversations to shape the narrative and relationships.

**Highlights:** Interactive story told through messages, Open-ended responses for real conversations, Multimedia messages (voice, photos, files), Based on real declassified events, Build relationships through dialogue

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

**In-app purchases:** none


### 灰宮村

[App page](https://appshunter.io/ios/app/arg/id6795116686)

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

**In-app purchases:** none


## Frequently asked questions

### Is Castle Bravo free?

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

### Is 灰宮村 free?

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

### Do Castle Bravo or 灰宮村 have ads?

Both Castle Bravo and 灰宮村 show ads.

### Which is updated more often, Castle Bravo or 灰宮村?

Castle Bravo ships an update every 2 weeks, and 灰宮村 every 10 days. Most recently, Castle Bravo was updated on October 13, 2026 and 灰宮村 on October 14, 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.*