# Fronius Solar.SOS vs Shiner

Fronius Solar.SOS and Shiner both sit at 1.5 stars, but that hides the real split: 18% of Shiner's written reviews are positive against 0% of Fronius Solar.SOS's. Shiner also leads on ratings volume (21 vs 2) and update cadence (every 5 weeks vs every 3 months). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Shiner holds the better App Store score, 1.7 against 1.5. That said, the two scores are not equally well evidenced: Shiner has 21 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of Fronius Solar.SOS's written reviews are positive against 18% of Shiner's.

Fronius Solar.SOS ships an update every 3 months, Shiner every 5 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Fronius Solar.SOS | Shiner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.5 (2 ratings)](https://appshunter.io/ios/app/fronius-solarsos/id1516602936/reviews) | **[1.7 (21 ratings)](https://appshunter.io/ios/app/shiner/id6502581679/reviews)** |
| Number of ratings | 2 | **21** |
| Positive reviews | 0.0% of reviews | **18.2% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 15 MB | 89 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Fronius International GmbH](https://appshunter.io/developer/431601279) | [Shenzhen Growatt New Energy Technology Co.,Ltd](https://appshunter.io/developer/1135731820) |

## 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


### Shiner

[App page](https://appshunter.io/ios/app/shiner/id6502581679)

This monitoring application simplifies inverter setup and configuration for installers. End customers can easily track device performance and operational status in real-time through a user-friendly interface. It offers a comprehensive solution for managing energy systems.

**Highlights:** Quick inverter setup, Easy activation and debugging, Efficient configuration, Real-time device monitoring, Operational status updates, User-friendly interface

**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 Shiner free?

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

### Which has better reviews, Fronius Solar.SOS or Shiner?

Shiner is rated higher. Fronius Solar.SOS averages 1.5 out of 5 from 2 ratings, while Shiner averages 1.7 from 21 ratings.

### Do Fronius Solar.SOS or Shiner have ads?

Neither Fronius Solar.SOS nor Shiner shows ads.

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

Fronius Solar.SOS ships an update every 3 months, and Shiner every 5 weeks. Most recently, Fronius Solar.SOS was updated on November 3, 2026 and Shiner on October 30, 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.*