# Fronius Solar.SOS vs ESY Setup

The clearest difference is update cadence: ESY Setup at every 10 days 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, ESY Setup every 10 days. The most recent releases landed on August 19, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Fronius Solar.SOS | ESY Setup |
| --- | --- | --- |
| 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 | **Every 10 days** |
| Monetization | Free | — |
| Size | 15 MB | 74 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fronius International GmbH](https://appshunter.io/developer/431601279) | [ESY Sunhome Co., Ltd](https://appshunter.io/developer/1670781987) |

## 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


### ESY Setup

[App page](https://appshunter.io/ios/app/esy-setup/id1670782584)

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

**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 ESY Setup free?

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

### Do Fronius Solar.SOS or ESY Setup have ads?

Neither Fronius Solar.SOS nor ESY Setup shows ads.

### Which is updated more often, Fronius Solar.SOS or ESY Setup?

Fronius Solar.SOS ships an update every 3 months, and ESY Setup every 10 days. Most recently, Fronius Solar.SOS was updated on August 19, 2026 and ESY Setup on September 20, 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.*