# 娃娃坞 vs BrainOpen

The clearest difference is in-app purchases: 娃娃坞 at none against BrainOpen's 1. 娃娃坞 also leads on update cadence (every 9 days vs every 18 months) and iOS requirement (9.0 vs 13.0). On price, ads and device support there is nothing between them.

Both are free to download. BrainOpen sells 1 in-app purchase, starting at $3.99 per month. 娃娃坞 asks for nothing beyond the download.

娃娃坞 ships an update every 9 days, BrainOpen every 18 months. The most recent releases landed on October 3, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | 娃娃坞 | BrainOpen |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 18 months |
| Size | 72 MB | 113 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 9+ | 17+ |
| Developer | [Shanghai NineFrost Technology Co., Ltd.](https://appshunter.io/developer/1442487676) | [鞯 赵](https://appshunter.io/developer/1567856103) |

## What reviewers say

### 娃娃坞

[App page](https://appshunter.io/ios/app/id1504396460)

**Features:** macOS Compatibility

**In-app purchases:** none


### BrainOpen

[App page](https://appshunter.io/ios/app/brainopen/id1624322578)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VIP Monthly Card-Unlimited Chat | $3.99 | per month |


## Frequently asked questions

### Is 娃娃坞 free?

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

### Is BrainOpen free?

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

### Do 娃娃坞 or BrainOpen have ads?

Neither 娃娃坞 nor BrainOpen shows ads.

### Which is updated more often, 娃娃坞 or BrainOpen?

娃娃坞 ships an update every 9 days, and BrainOpen every 18 months. Most recently, 娃娃坞 was updated on October 3, 2026 and BrainOpen on October 1, 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.*