# 成语辞典离线版 vs 空氣污染警報

The clearest difference is in-app purchases: 空氣污染警報 at none against 成语辞典离线版's 1. 成语辞典离线版's advantage is rating (4.9 vs 4.6) and ratings volume (48 vs 5). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 成语辞典离线版 sells 1 one-off in-app purchase. 空氣污染警報 asks for nothing beyond the download.

成语辞典离线版 holds the better App Store score, 4.9 against 4.6. That said, the two scores are not equally well evidenced: 成语辞典离线版 has 48 ratings behind it against 5, so its average is the more settled of the two.

成语辞典离线版 ships an update fortnightly, 空氣污染警報 monthly. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 成语辞典离线版 | 空氣污染警報 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (48 ratings)](https://appshunter.io/ios/app/id833357031/reviews)** | [4.6 (5 ratings)](https://appshunter.io/ios/app/id6444897109/reviews) |
| Number of ratings | **48** | 5 |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Fortnightly** | Monthly |
| Size | 59 MB | 55 MB |
| Requires iOS | **9.0** | 16.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [品 高](https://appshunter.io/developer/558244298) | [DoItWell Application Ltd](https://appshunter.io/developer/505381716) |

## What reviewers say

### 成语辞典离线版

[App page](https://appshunter.io/ios/app/id833357031)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 去除广告 | $0.99 | one-time |


### 空氣污染警報

[App page](https://appshunter.io/ios/app/id6444897109)

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

**In-app purchases:** none


## Frequently asked questions

### Is 成语辞典离线版 free?

成语辞典离线版 is free to download, with in-app purchases available.

### Is 空氣污染警報 free?

空氣污染警報 is free to download, with no in-app purchases.

### Which has better reviews, 成语辞典离线版 or 空氣污染警報?

成语辞典离线版 is rated higher. 成语辞典离线版 averages 4.9 out of 5 from 48 ratings, while 空氣污染警報 averages 4.6 from 5 ratings.

### Do 成语辞典离线版 or 空氣污染警報 have ads?

Both 成语辞典离线版 and 空氣污染警報 show ads.

### Which is updated more often, 成语辞典离线版 or 空氣污染警報?

成语辞典离线版 ships an update fortnightly, and 空氣污染警報 monthly. Most recently, 成语辞典离线版 was updated on October 21, 2026 and 空氣污染警報 on October 24, 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.*