# 仪器信息网 vs 环保小智

The clearest difference is in-app purchases: 环保小智 at none against 仪器信息网's 10. 仪器信息网's advantage is update cadence (every 2 weeks vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 仪器信息网 sells 10 one-off in-app purchases. 环保小智 asks for nothing beyond the download.

仪器信息网 ships an update every 2 weeks, 环保小智 monthly. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | 仪器信息网 | 环保小智 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (22 ratings)](https://appshunter.io/ios/app/id674872309/reviews)** | — |
| Number of ratings | **22** | — |
| Positive reviews | 71.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Size | 256 MB | 81 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [仪器信息网](https://appshunter.io/developer/674872312) | [Hangzhou Qingshen Environmental Protection Technology Co., Ltd.](https://appshunter.io/developer/1508942974) |

## What reviewers say

### 仪器信息网

[App page](https://appshunter.io/ios/app/id674872309)

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 6块钱(600个好学币) | $0.99 | one-time |
| 30块钱(3000个好学币) | $4.99 | one-time |
| 50块钱(5000个好学币) | $7.99 | one-time |
| 108块钱(10800个好学币) | $15.99 | one-time |
| 购买VIP会员12个月（年度会员） | $21.99 | one-time |
| 208块钱(20800个好学币) | $30.99 | one-time |
| 418块钱(41800个好学币) | $64.99 | one-time |
| 998块钱(99800个好学币) | $149.99 | one-time |
| 1598块钱(159800个好学币) | $239.99 | one-time |
| 1998块钱(199800个好学币) | $299.99 | one-time |


### 环保小智

[App page](https://appshunter.io/ios/app/id1508942975)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 仪器信息网 free?

仪器信息网 is free to download, with in-app purchases available.

### Is 环保小智 free?

环保小智 is free to download, with no in-app purchases.

### Do 仪器信息网 or 环保小智 have ads?

Neither 仪器信息网 nor 环保小智 shows ads.

### Which is updated more often, 仪器信息网 or 环保小智?

仪器信息网 ships an update every 2 weeks, and 环保小智 monthly. Most recently, 仪器信息网 was updated on October 24, 2026 and 环保小智 on October 10, 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.*