# 专业测量仪 vs RunDo Solar

The clearest difference is price: RunDo Solar at Free against 专业测量仪's $0.99. On update cadence, ads, in-app purchases and device support there is nothing between them.

RunDo Solar is free to download; 专业测量仪 costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

专业测量仪 ships an update every 5 days, RunDo Solar weekly. The most recent releases landed on October 8, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | 专业测量仪 | RunDo Solar |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Weekly |
| Size | 123 MB | 137 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [小飞 刘](https://appshunter.io/developer/1679472128) | [广东润建电力科技有限公司](https://appshunter.io/developer/1715436266) |

## What reviewers say

### 专业测量仪

[App page](https://appshunter.io/ios/app/id6449776548)

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

**In-app purchases:** none


### RunDo Solar

[App page](https://appshunter.io/ios/app/rundo-solar/id6471479218)

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

**In-app purchases:** none


## Frequently asked questions

### Is 专业测量仪 free?

专业测量仪 costs $0.99, with no in-app purchases.

### Is RunDo Solar free?

RunDo Solar is free to download, with no in-app purchases.

### Do 专业测量仪 or RunDo Solar have ads?

Neither 专业测量仪 nor RunDo Solar shows ads.

### Which is updated more often, 专业测量仪 or RunDo Solar?

专业测量仪 ships an update every 5 days, and RunDo Solar weekly. Most recently, 专业测量仪 was updated on October 8, 2026 and RunDo Solar on October 16, 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.*