# Fronius Solar.SOS vs Metrel Cloud App

The clearest difference is update cadence: Metrel Cloud App at monthly against Fronius Solar.SOS's every 3 months. 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.

Fronius Solar.SOS ships an update every 3 months, Metrel Cloud App monthly. The most recent releases landed on October 16, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Fronius Solar.SOS | Metrel Cloud App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.5 (2 ratings)](https://appshunter.io/ios/app/fronius-solarsos/id1516602936/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Free | — |
| Size | 15 MB | 76 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Fronius International GmbH](https://appshunter.io/developer/431601279) | [Metrel d.d.](https://appshunter.io/developer/1581986115) |

## What reviewers say

### Fronius Solar.SOS

[App page](https://appshunter.io/ios/app/fronius-solarsos/id1516602936)

This business tool helps installers quickly resolve technical issues with solar systems. It allows for easy ordering of replacement parts and provides access to important documentation. The app streamlines the service process directly at the installation site.

**Highlights:** Manage multiple accounts, Order replacement parts, Track order status, Messaging with support, Access installation guides, Troubleshoot technical issues

**In-app purchases:** none


### Metrel Cloud App

[App page](https://appshunter.io/ios/app/metrel-cloud-app/id1581986113)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Fronius Solar.SOS free?

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

### Is Metrel Cloud App free?

Metrel Cloud App is free to download, with no in-app purchases.

### Do Fronius Solar.SOS or Metrel Cloud App have ads?

Neither Fronius Solar.SOS nor Metrel Cloud App shows ads.

### Which is updated more often, Fronius Solar.SOS or Metrel Cloud App?

Fronius Solar.SOS ships an update every 3 months, and Metrel Cloud App monthly. Most recently, Fronius Solar.SOS was updated on October 16, 2026 and Metrel Cloud App on October 6, 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.*