# 看空气监测版 vs Classly

The clearest difference is price: 看空气监测版 at Free against Classly's $14.99. 看空气监测版 also leads on iOS requirement (13.0 vs 17.0). Classly's advantage is update cadence (every 2 weeks vs every 2 months). On ads, in-app purchases and device support there is nothing between them.

看空气监测版 is free to download; Classly costs $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

看空气监测版 ships an update every 2 months, Classly every 2 weeks. The most recent releases landed on September 26, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | 看空气监测版 | Classly |
| --- | --- | --- |
| Price | **Free** | $14.99 |
| Positive reviews | — | 71.4% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | — | Paid |
| Size | 13 MB | 24 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Everbest Machinery Industry Co.,Ltd](https://appshunter.io/developer/564470332) | [上海首铭信息科技有限公司](https://appshunter.io/developer/1155891027) |

## What reviewers say

### 看空气监测版

[App page](https://appshunter.io/ios/app/id1251838951)

**Features:** macOS Compatibility

**In-app purchases:** none


### Classly

[App page](https://appshunter.io/ios/app/classly-class-tracker/id6751786308)

Effortlessly manage dance, piano, or art classes with this intuitive app. Track lesson times, attendance, and payments with smart reminders and automatic statistics. Securely sync your data via iCloud for peace of mind.

**Highlights:** Smart course management, Convenient attendance tracking, Professional expense management, Data synchronization and backup, Clear interface design, Smart reminder function

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

**In-app purchases:** none


## Frequently asked questions

### Is 看空气监测版 free?

看空气监测版 is free to download, with no in-app purchases.

### Is Classly free?

Classly costs $14.99, with no in-app purchases.

### Do 看空气监测版 or Classly have ads?

Neither 看空气监测版 nor Classly shows ads.

### Which is updated more often, 看空气监测版 or Classly?

看空气监测版 ships an update every 2 months, and Classly every 2 weeks. Most recently, 看空气监测版 was updated on September 26, 2026 and Classly on October 15, 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.*