# RunDo Solar vs SolarFos Pro

The clearest difference is update cadence: RunDo Solar at every 5 days against SolarFos Pro's every 5 months. SolarFos Pro's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

RunDo Solar ships an update every 5 days, SolarFos Pro every 5 months. The most recent releases landed on October 30, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | RunDo Solar | SolarFos Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 5 months |
| Size | 128 MB | 39 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [广东润建电力科技有限公司](https://appshunter.io/developer/1715436266) | [西安振森智能科技有限公司](https://appshunter.io/developer/1826710880) |

## What reviewers say

### RunDo Solar

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

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

**In-app purchases:** none


### SolarFos Pro

[App page](https://appshunter.io/ios/app/solarfos-pro/id6748631885)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RunDo Solar free?

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

### Is SolarFos Pro free?

SolarFos Pro is free to download, with no in-app purchases.

### Do RunDo Solar or SolarFos Pro have ads?

Neither RunDo Solar nor SolarFos Pro shows ads.

### Which is updated more often, RunDo Solar or SolarFos Pro?

RunDo Solar ships an update every 5 days, and SolarFos Pro every 5 months. Most recently, RunDo Solar was updated on October 30, 2026 and SolarFos Pro on October 14, 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.*