# 牡丹会议 vs 超低排放

The clearest difference is iOS requirement: 超低排放 at 13.0 against 牡丹会议's 15.6. 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.

牡丹会议 ships an update every 3 months, 超低排放 every 2 months. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 牡丹会议 | 超低排放 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 149 MB | 64 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [牡丹集团](https://appshunter.io/developer/916416236) | [北京万维盈创科技有限公司](https://appshunter.io/developer/1680456251) |

## What reviewers say

### 牡丹会议

[App page](https://appshunter.io/ios/app/id1645056229)

**Features:** Vision Pro support

**In-app purchases:** none


### 超低排放

[App page](https://appshunter.io/ios/app/id6450707174)

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

**In-app purchases:** none


## Frequently asked questions

### Is 牡丹会议 free?

牡丹会议 is free to download, with no in-app purchases.

### Is 超低排放 free?

超低排放 is free to download, with no in-app purchases.

### Do 牡丹会议 or 超低排放 have ads?

Neither 牡丹会议 nor 超低排放 shows ads.

### Which is updated more often, 牡丹会议 or 超低排放?

牡丹会议 ships an update every 3 months, and 超低排放 every 2 months. Most recently, 牡丹会议 was updated on October 27, 2026 and 超低排放 on October 25, 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.*