Fronius Solar.SOS vs EPEVER Pair
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fronius Solar.SOS
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.
- Manage multiple accounts
- Order replacement parts
- Track order status
- Messaging with support
- Access installation guides
- Troubleshoot technical issues
Read full descriptionHide full description
Fronius Solar.SOS is a self-service solution for all technical queries. This is a business application that installers can use to initiate the service process online directly at the system location - quite simply with the serial number of the inverter or a state code. In the space of a few clicks, Solar.SOS supports installers with troubleshooting and ordering replacement parts. The big advantage is that with this app installers can resolve technical problems themselves at any time. Attention - this app is purely a solution for installers (B2B). Features: - Manage multiple accounts, all from a single account - All orders at a glance (case overview) - Rapid ordering of replacement parts - Check the status of orders with ease - Messaging function with technical support (case messages) - Access to all relevant Installation Instructions and Operating Instructions (YouTube, etc.)
EPEVER Pair
This app allows users to monitor and control solar power systems. It provides real-time data and system status for solar charge controllers and off-grid inverters. Manage your solar energy solutions efficiently with this tool.
- Real-time system monitoring
- Control solar charge controllers
- Manage off-grid inverters
- View system status
- Solar application system management
Read full descriptionHide full description
Beijing Epsolar Technology Co., Ltd. was established in March 2007 with more than 30 million RMB registered capital. We are a new and high-tech enterprise which was specialized in power products researching, manufacturing, and marketing. We provide products including solar charge controllers, off-grid inverter, LED driver and special power units etc., as well as design and supply relevant solar application systems. The company has passed the ISO9001: 2008, and products have passed CGC-SOLAR, CE, ROSH, FCC, and ETL certificate, as well as other domestic and international authoritative certification and a number of patents. The products have been extensively applied and highly appraised in a number of major projects at home and abroad. And sell in more than 120 foreign countries and regions. In July 2014, we established Shenzhen branch as our production base. In August 2014, we were listed in NATIONAL EQUITIES EXCHANGE AND QUOTATIONS and launched into capital market successfully.
Screenshots
Verdict
The clearest difference is rating: EPEVER Pair at 2.0 against Fronius Solar.SOS's 1.5. EPEVER Pair also leads on update cadence (every 3 weeks vs every 3 months) and review sentiment (15% vs 0%). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
EPEVER Pair holds the better App Store score, 2.0 against 1.5. That said, the two scores are not equally well evidenced: EPEVER Pair has 16 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 15% of EPEVER Pair's.
Fronius Solar.SOS ships an update every 3 months, EPEVER Pair every 3 weeks. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.
| Parameter | Fronius Solar.SOS | EPEVER Pair |
|---|---|---|
| Price | Free | Free |
| Rating | 1.5 (2 ratings) | 2.0 (16 ratings) — better |
| Positive reviews | 0.0% of reviews | 14.9% of reviews — better |
| Number of ratings | 2 | 16 — better |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 15 MB | 92 MB |
| Age rating | 4+ | 4+ |
| Developer | Fronius International GmbH | BEIJING EPSOLAR TECHNOLOGY CO., LTD. |
Customer experience
Fronius Solar.SOS
EPEVER Pair
In-app purchases
Fronius Solar.SOS
No in-app purchases
EPEVER Pair
No in-app purchases









