# 仪器信息网 vs Smart Unit Converter tool

The clearest difference is price: 仪器信息网 at Free against Smart Unit Converter tool's $0.99. 仪器信息网 also leads on iOS requirement (13.0 vs 16.6). Smart Unit Converter tool's advantage is in-app purchases (none vs 10). On ads and device support there is nothing between them.

仪器信息网 is free to download; Smart Unit Converter tool costs $0.99 up front. 仪器信息网 sells 10 one-off in-app purchases. Smart Unit Converter tool asks for nothing beyond the download.

## The numbers

| Metric | 仪器信息网 | Smart Unit Converter tool |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| 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 | — |
| Size | 256 MB | 4 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | +4 |
| Developer | [仪器信息网](https://appshunter.io/developer/674872312) | [小燕 陈](https://appshunter.io/developer/1462872555) |

## 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 |


### Smart Unit Converter tool

[App page](https://appshunter.io/ios/app/smart-unit-converter-tool/id6762502817)

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

**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 Smart Unit Converter tool free?

Smart Unit Converter tool costs $0.99, with no in-app purchases.

### Do 仪器信息网 or Smart Unit Converter tool have ads?

Neither 仪器信息网 nor Smart Unit Converter tool shows ads.

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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.*