# Hi FAST vs Sol Power

The clearest difference is update cadence: Sol Power at every 11 days against Hi FAST's every 5 weeks. Hi FAST's advantage is iOS requirement (12 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.

Hi FAST ships an update every 5 weeks, Sol Power every 11 days. The most recent releases landed on October 28, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Hi FAST | Sol Power |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 11 days** |
| Size | 45 MB | 36 MB |
| Requires iOS | **12** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [INFINITY ENERGY VIETNAM COMPANY LIMITED](https://appshunter.io/developer/1818779660) | [SOLTECH TRADING AND CONSTRUCTION CO., LTD.](https://appshunter.io/developer/6812219945) |

## What reviewers say

### Hi FAST

[App page](https://appshunter.io/ios/app/hi-fast/id6746847462)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sol Power

[App page](https://appshunter.io/ios/app/sol-power/id6812219943)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Hi FAST free?

Hi FAST is free to download, with no in-app purchases.

### Is Sol Power free?

Sol Power is free to download, with no in-app purchases.

### Do Hi FAST or Sol Power have ads?

Neither Hi FAST nor Sol Power shows ads.

### Which is updated more often, Hi FAST or Sol Power?

Hi FAST ships an update every 5 weeks, and Sol Power every 11 days. Most recently, Hi FAST was updated on October 28, 2026 and Sol Power on October 9, 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.*