# Blue Map vs 江苏空气质量

The clearest difference is rating: Blue Map at 5.0 against 江苏空气质量's 2.8. Blue Map also leads on review sentiment (71% vs 33%). 江苏空气质量's advantage is ratings volume (11 vs 2). 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.

Blue Map holds the better App Store score, 5.0 against 2.8. That said, the two scores are not equally well evidenced: 江苏空气质量 has 11 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 71% of Blue Map's written reviews are positive against 33% of 江苏空气质量's.

Blue Map ships an update every 2 weeks, 江苏空气质量 every 10 days. The most recent releases landed on September 27, 2026 and July 27, 2026 respectively.

## The numbers

| Metric | Blue Map | 江苏空气质量 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/blue-map/id838211758/reviews)** | [2.8 (11 ratings)](https://appshunter.io/ios/app/id1440697804/reviews) |
| Number of ratings | 2 | **11** |
| Positive reviews | **71.2% of reviews** | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 10 days** |
| Monetization | Free | — |
| Size | 127 MB | 2 MB |
| Requires iOS | 15 | **14.0** |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [北京市朝阳区公众环境研究中心](https://appshunter.io/developer/838211761) | [3Clear Technology Co., Ltd](https://appshunter.io/developer/1211590929) |

## What reviewers say

### Blue Map

[App page](https://appshunter.io/ios/app/blue-map/id838211758)

Access global environmental data, including air and water quality, corporate emissions, and ecological information. Participate in environmental protection by reporting pollution, sharing data, and tracking your low-carbon actions. Visualize environmental conditions with interactive maps and receive AI-driven insights and health alerts.

**Highlights:** Real-time environmental quality data, Corporate emissions and performance tracking, Public pollution reporting and action, Interactive environmental maps, AI-powered data insights, Personalized health and environmental alerts

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### 江苏空气质量

[App page](https://appshunter.io/ios/app/id1440697804)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Blue Map free?

Blue Map is free to download, with no in-app purchases.

### Is 江苏空气质量 free?

江苏空气质量 is free to download, with no in-app purchases.

### Which has better reviews, Blue Map or 江苏空气质量?

Blue Map is rated higher. Blue Map averages 5.0 out of 5 from 2 ratings, while 江苏空气质量 averages 2.8 from 11 ratings.

### Do Blue Map or 江苏空气质量 have ads?

Neither Blue Map nor 江苏空气质量 shows ads.

### Which is updated more often, Blue Map or 江苏空气质量?

Blue Map ships an update every 2 weeks, and 江苏空气质量 every 10 days. Most recently, Blue Map was updated on September 27, 2026 and 江苏空气质量 on July 27, 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.*