# HeliTool vs SolarMax Onyx

The clearest difference is iOS requirement: HeliTool at 8.0 against SolarMax Onyx's 13.4. 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.

## The numbers

| Metric | HeliTool | SolarMax Onyx |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 4 months |
| Size | 59 MB | 42 MB |
| Requires iOS | **8.0** | 13.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [JARVIS IT-Dienstleistungen GmbH](https://appshunter.io/developer/1735934124) | [Power Highway](https://appshunter.io/developer/1481400414) |

## What reviewers say

### HeliTool

[App page](https://appshunter.io/ios/app/helitool/id6754552677)

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

**In-app purchases:** none


### SolarMax Onyx

[App page](https://appshunter.io/ios/app/solarmax-onyx/id6758598866)

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

**In-app purchases:** none


## Frequently asked questions

### Is HeliTool free?

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

### Is SolarMax Onyx free?

SolarMax Onyx is free to download, with no in-app purchases.

### Do HeliTool or SolarMax Onyx have ads?

Neither HeliTool nor SolarMax Onyx 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.*