Comparison

Fronius Solar.SOS vs Down Under Bridge Units

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

Down Under Bridge Units

Features
Read full description

Down Under Bridge Units app is created specifically for all Down Under Bridge Units drivers to manage their job schedule with ease. If you’re a new Down Under Bridge Units and need a new account for app login, please contact an administrator so that they can send you an invite. From within this app, you can: - View and manage your job schedule - Receive SMS notifications and updates about your jobs - Attach and upload site dockets to jobs - View job contact information - View recommended routes and stop points for remote jobs

Screenshots

Fronius Solar.SOS4 screens
Down Under Bridge Units2 screens

Verdict

The call

The clearest difference is update cadence: Fronius Solar.SOS at every 3 months against Down Under Bridge Units's every 10 months. Down Under Bridge Units's advantage is iOS requirement (12.0 vs 15.0). 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, Down Under Bridge Units every 10 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard2 real differences · 8 level
Fronius Solar.SOS versus Down Under Bridge Units: the parameters behind the verdict, then further details
ParameterFronius Solar.SOSDown Under Bridge Units
PriceFreeFree
Rating1.5 (2 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 3 months — betterEvery 10 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size15 MB44 MB
Age rating4+4+
DeveloperFronius International GmbHEWP Truck Hire Pty Ltd

In-app purchases

None

Fronius Solar.SOS

No in-app purchases

None

Down Under Bridge Units

No in-app purchases

Questions

Is Fronius Solar.SOS free?
Fronius Solar.SOS is free to download, with no in-app purchases.
Is Down Under Bridge Units free?
Down Under Bridge Units is free to download, with no in-app purchases.
Do Fronius Solar.SOS or Down Under Bridge Units have ads?
Neither Fronius Solar.SOS nor Down Under Bridge Units shows ads.
Which is updated more often, Fronius Solar.SOS or Down Under Bridge Units?
Fronius Solar.SOS ships an update every 3 months, and Down Under Bridge Units every 10 months. Most recently, Fronius Solar.SOS was updated on November 3, 2026 and Down Under Bridge Units on October 30, 2026.

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