# Soluna eCloud vs SolarMax Onyx

The clearest difference is update cadence: Soluna eCloud at every 2 months against SolarMax Onyx's every 5 months. SolarMax Onyx's advantage is iOS requirement (13.4 vs 15.6). 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.

Soluna eCloud ships an update every 2 months, SolarMax Onyx every 5 months. The most recent releases landed on September 24, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Soluna eCloud | SolarMax Onyx |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Size | 33 MB | 42 MB |
| Requires iOS | 15.6 | **13.4** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Shanghai Raymon IoT Technology Co., Ltd.](https://appshunter.io/developer/1649162918) | [Power Highway](https://appshunter.io/developer/1481400414) |

## What reviewers say

### Soluna eCloud

[App page](https://appshunter.io/ios/app/soluna-ecloud/id6444200437)

**Features:** macOS Compatibility

**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 Soluna eCloud free?

Soluna eCloud 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 Soluna eCloud or SolarMax Onyx have ads?

Neither Soluna eCloud nor SolarMax Onyx shows ads.

### Which is updated more often, Soluna eCloud or SolarMax Onyx?

Soluna eCloud ships an update every 2 months, and SolarMax Onyx every 5 months. Most recently, Soluna eCloud was updated on September 24, 2026 and SolarMax Onyx on October 7, 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.*