Comparison

Fronius Solar.SOS vs ETHERMA eTOUCH

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

ETHERMA eTOUCH

Features
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With the ETHERMA eTOUCH app, you can easily control the ETHERMA eTOUCH PRO thermostat and thus the temperature in your house with your iPhone or iPad - from home or on the go. The free app ETHERMA eTOUCH allows you to set up the heating according to your wishes using daily or weekly programs and thus create a feel-good climate in your home. In addition to comfort, the intelligent control of your home also means that you only heat when you want it and, thanks to individual room control, only in the rooms you select. This saves you energy and money. With the option of group switching of several thermostats, you can, for example, control or program an entire floor or all bedrooms at the same time with the push of a button.

Screenshots

Fronius Solar.SOS4 screens
ETHERMA eTOUCH4 screens

Verdict

The call

The clearest difference is update cadence: Fronius Solar.SOS at every 3 months against ETHERMA eTOUCH's every 16 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, ETHERMA eTOUCH every 16 months. The most recent releases landed on August 19, 2026 and September 17, 2026 respectively.

Scorecard1 real difference · 9 level
Fronius Solar.SOS versus ETHERMA eTOUCH: the parameters behind the verdict, then further details
ParameterFronius Solar.SOSETHERMA eTOUCH
PriceFreeFree
Rating1.5 (2 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 3 months — betterEvery 16 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPod
Requires iOS14.0 — better15.1
Further details — not scored
Size15 MB41 MB
Age rating4+4+
DeveloperFronius International GmbHETHERMA Holding GmbH

In-app purchases

None

Fronius Solar.SOS

No in-app purchases

None

ETHERMA eTOUCH

No in-app purchases

Questions

Is Fronius Solar.SOS free?
Fronius Solar.SOS is free to download, with no in-app purchases.
Is ETHERMA eTOUCH free?
ETHERMA eTOUCH is free to download, with no in-app purchases.
Do Fronius Solar.SOS or ETHERMA eTOUCH have ads?
Neither Fronius Solar.SOS nor ETHERMA eTOUCH shows ads.
Which is updated more often, Fronius Solar.SOS or ETHERMA eTOUCH?
Fronius Solar.SOS ships an update every 3 months, and ETHERMA eTOUCH every 16 months. Most recently, Fronius Solar.SOS was updated on August 19, 2026 and ETHERMA eTOUCH on September 17, 2026.

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