Reviews of Fronius Solar.start

By: Fronius International GmbH App

List of user reviews and ratings for Fronius Solar.start

Total ratings

2.20 (Rating count: 708)

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Review summary

Reviews consistently cite serious connectivity and authentication problems, with unreliable inverter pairing and repeated login failures. Stability issues (crashes, long load times) and confusing navigation worsen usability. Update/download problems and data gaps after upgrades further degrade experience. A minority find basic functionality or monitoring useful, but the recurring issues dominate user sentiment.

Pros

Basic functionality exists (bare-bones operation).
Some users find it helpful for commissioning and monitoring energy usage.
A few reviews call it a useful solar monitor.

Cons

Inconsistent/inability to connect to inverter and pairing issues.
Login problems (login button greyed out, frequent login required, can't reset password).
Stability issues (crashes, long load times, frequent restarts).
Poor UX/UI and confusing navigation on mobile.
Upgrade/download problems and data gaps after updates.

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User Reviews

Recent rating average: 1.70

All time rating average: 2.20

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74% (51)

Date	Author	Comment
2026-05-19	To*****	Deserves a Zero star, no logic to the navigation of this app. you spend more time going around in circles trying to get to the item you want to adjust than it takes to do the adjustment
Deserves a Zero star, no logic to the navigation of this app. you spend more time going around in circles trying to get to the item you want to adjust than it takes to do the adjustment
2026-05-16	Ro*****	great app
great app
2026-05-03	Br*****	This has got to be the most difficult app I have ever used. Configuration is impossibly difficult.
This has got to be the most difficult app I have ever used. Configuration is impossibly difficult.
2026-03-22	Ti*****	Very flaky, Have tried to use this to control battery charging from the grid (Time dependant control) e.g. on or off as our needs change. Some days it works other days not. Given up and just use the web interface, as the app it too hit and miss.
Very flaky, Have tried to use this to control battery charging from the grid (Time dependant control) e.g. on or off as our needs change. Some days it works other days not. Given up and just use the web interface, as the app it too hit and miss.
2026-03-12	Co*****	Absolutely the worst app I ever used
Absolutely the worst app I ever used
2026-01-26	Br*****	What a waste of download. I'm an end user and can't for the life of me get my inverter connected to this app.
What a waste of download. I'm an end user and can't for the life of me get my inverter connected to this app.
2026-01-24	Pa*****	I have tried for a long time to use this app to monitor the inverter and it doesnt work consistantly. It is useless.
I have tried for a long time to use this app to monitor the inverter and it doesnt work consistantly. It is useless.
2025-12-26	Vi*****	doesn't work
doesn't work
2025-12-12	An*****	I'll be the first to review this app! It works in a bare basic sense. Does the job, but nothing more. I really think it should be folded into the solar.web app so that the extensibility of this app is combined with the other. I prefer the live energy diagram of this app to the solar.web one, so Feronius, please use this one in your products. Menu navigation is sub-optimal with having to use the back arrow to return to menus. Some work needs to be done to explain battery Time Dependent Controls.
I'll be the first to review this app! It works in a bare basic sense. Does the job, but nothing more. I really think it should be folded into the solar.web app so that the extensibility of this app is combined with the other. I prefer the live energy diagram of this app to the solar.web one, so Feronius, please use this one in your products. Menu navigation is sub-optimal with having to use the back arrow to return to menus. Some work needs to be done to explain battery Time Dependent Controls.
2025-11-27	La*****	it's so hard to reconnect my primo to your app
it's so hard to reconnect my primo to your app