Comparison

Fronius Solar.SOS vs Circle Light 2025

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Manage multiple accounts
  • Order replacement parts
  • Track order status
  • Messaging with support
  • Access installation guides
  • Troubleshoot technical issues
Read 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.)

About

Circle Light 2025

Features
Read full description

The Schréder Circle Light application aims to help lighting managers maximise the benefits of luminaires and extend their life cycle to the maximum. It enables road and urban lighting fixtures to be programmed quickly and easily, for example, to set the luminous flux, schedule the dimming profile and set up other parameters that define the actual operation of the luminaire on-site. Using NFC (Near-Field Communication) technology for contactless driver programming, the Schréder Circle Light application is part of a complete service ecosystem that includes the Schréder Smart Label, which gathers product-specific information in a codified and structured way. The App enables the factory settings to be updated with reprogramming data and information captured during the installation phase (dimming profile, date and place of installation, etc.). The updated information can then be accessed and viewed in the Schréder Smart Label Portal and in the Schréder EXEDRA control platform interface. Offering a quick and easy adaptation of luminaire parameters on the field, the Schréder Circle Light application allows standard luminaires to be adjusted to meet various requirements, for example, to adapt the luminaire's output to a specific lighting class and to maximise savings with the most efficient dimming profile. The Schréder Circle Light application is able to capture the parameters of a failed driver and reprogramme a new driver with the same settings, prolonging the regular operating status of the luminaire on-site. With the unique luminaire ID, the parameters that can be configured on the field, are predefined by the manufacturer to ensure reliable luminaire operation. The Schréder Circle Light App provides the following features: - Programme a luminaire driver using the NFC technology of a smartphone or tablet - 3 ways to access the factory dimming programme of a luminaire: unique serial number, Schréder Smart Label or dimming code - Differentiated access rights according to the user's profile - Update luminaire installation data (date and precise location) for asset management - Access to luminaire information, diagnostic and usage data

Screenshots

Fronius Solar.SOS4 screens
Circle Light 20254 screens

Verdict

The call

The clearest difference is update cadence: Circle Light 2025 at every 3 weeks against Fronius Solar.SOS's every 3 months. On price, ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

Fronius Solar.SOS ships an update every 3 months, Circle Light 2025 every 3 weeks. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

Scorecard1 real difference · 9 level
Fronius Solar.SOS versus Circle Light 2025: the parameters behind the verdict, then further details
ParameterFronius Solar.SOSCircle Light 2025
PriceFreeFree
Rating1.5 (2 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 3 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.0 — better16
Further details — not scored
Size15 MB38 MB
Age rating4+4+
DeveloperFronius International GmbHSchreder SA

In-app purchases

None

Fronius Solar.SOS

No in-app purchases

None

Circle Light 2025

No in-app purchases

Questions

Is Fronius Solar.SOS free?
Fronius Solar.SOS is free to download, with no in-app purchases.
Is Circle Light 2025 free?
Circle Light 2025 is free to download, with no in-app purchases.
Do Fronius Solar.SOS or Circle Light 2025 have ads?
Neither Fronius Solar.SOS nor Circle Light 2025 shows ads.
Which is updated more often, Fronius Solar.SOS or Circle Light 2025?
Fronius Solar.SOS ships an update every 3 months, and Circle Light 2025 every 3 weeks. Most recently, Fronius Solar.SOS was updated on November 7, 2026 and Circle Light 2025 on October 30, 2026.

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