# 罕见病新进展 vs BPPV Simulator

The clearest difference is in-app purchases: 罕见病新进展 at none against BPPV Simulator's 1. 罕见病新进展 also leads on iOS requirement (12.1 vs 15.0). BPPV Simulator's advantage is update cadence (every 5 days vs every 5 months). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. BPPV Simulator sells 1 one-off in-app purchase. 罕见病新进展 asks for nothing beyond the download.

罕见病新进展 ships an update every 5 months, BPPV Simulator every 5 days. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 罕见病新进展 | BPPV Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id1584776671/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 5 days** |
| Size | 9 MB | 36 MB |
| Requires iOS | **12.1** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Suzhou Liangyihui Network Technology Co., Ltd.](https://appshunter.io/developer/1034265663) | [孝宝 马](https://appshunter.io/developer/6817442982) |

## What reviewers say

### 罕见病新进展

[App page](https://appshunter.io/ios/app/id1584776671)

**In-app purchases:** none


### BPPV Simulator

[App page](https://appshunter.io/ios/app/bppv-simulator/id6818993402)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 专业模块解锁 | $2.99 | one-time |


## Frequently asked questions

### Is 罕见病新进展 free?

罕见病新进展 is free to download, with no in-app purchases.

### Is BPPV Simulator free?

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

### Do 罕见病新进展 or BPPV Simulator have ads?

Neither 罕见病新进展 nor BPPV Simulator shows ads.

### Which is updated more often, 罕见病新进展 or BPPV Simulator?

罕见病新进展 ships an update every 5 months, and BPPV Simulator every 5 days. Most recently, 罕见病新进展 was updated on November 1, 2026 and BPPV Simulator on October 31, 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.*