Fronius Solar.web vs TSUN Smart
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fronius Solar.web
Monitor your photovoltaic system's performance with live data, historical energy trends, and expected generation. Manage batteries, analyze earnings, and view system components. Widgets provide quick access to key information.
- Live PV system data display
- Historical energy data analysis
- Expected generation forecasting
- Battery management features
- Earnings evaluation
- System component viewing
- Home and lock screen widgets
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With the Fronius Solar.web App you have many useful features: - Useful display of live data of your PV system - Historical energy data in form of various time intervals - Expected generation data of your PV system* - Extended weather data* - Battery management with the Battery control and Energy Cost Assistant feature* - Adjust your device settings (i.e. Battery max. SoC)** - Evaluation and analysis of your earnings - Viewing the components of your PV system - Useful Widgets for your Lock- and Home Screen * Depends on your PV system configuration (Devices i.e. Smart Meter, Battery, ...) and Solar.web Premium subscription (Chargeable subscription). ** Fronius GEN24, Verto or Tauro needed. Minimal required firmware version 1.40.8-1 or higher
TSUN Smart
Monitor your solar power plants and devices from your mobile. Track real-time and historical generation data, calculate yield, and visualize individual panel performance with a custom layout.
- Manage multiple solar plants
- Add and configure devices
- View real-time generation data
- Review historical generation data
- Calculate solar yield
- Build solar panel layouts
- Monitor individual panel performance
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TSUN Smart is a solar plant mornitoring application used by endusers or installers for TSUN products. You are able to manage different plants, add devices, configure the devices in batch, review real-time and historic generation data as well calculate your yield on your mobile phone. In addition, you are able to build a layout of your solar panels and mornitor the perfomance of each panel individually.
Screenshots
Verdict
The clearest difference is rating: TSUN Smart at 5.0 against Fronius Solar.web's 3.1. TSUN Smart also leads on monetization model (free vs free with in-app purchases). Fronius Solar.web's advantage is ratings volume (7 vs 1) and update cadence (every 3 weeks vs every 6 weeks). On price, review sentiment, ads and in-app purchases 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.
TSUN Smart holds the better App Store score, 5.0 against 3.1. That said, the two scores are not equally well evidenced: Fronius Solar.web has 7 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 19% and 18% positive.
Fronius Solar.web ships an update every 3 weeks, TSUN Smart every 6 weeks. The most recent releases landed on October 20, 2026 and October 17, 2026 respectively.
| Parameter | Fronius Solar.web | TSUN Smart |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (7 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 18.8% of reviews — better | 18.1% of reviews |
| Number of ratings | 7 — better | 1 |
| Update frequency | Every 3 weeks — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 168 MB | 69 MB |
| Age rating | 17+ | 4+ |
| Developer | Fronius International GmbH | TSUNESS Co., Ltd |
Customer experience
Fronius Solar.web
TSUN Smart
User reviews
Fronius Solar.web
From 7 App Store ratingsWhat we love
- 🚀 Sleek and intuitive UI
- 👍 Comprehensive monitoring of solar production and consumption
- 🔋 Excellent battery management features
Room to improve
- 🐛 Frequent login issues and app crashes
- ⏱️ Slow data updates and laggy performance
- 📉 Inconsistent or missing historical data
- 🔒 Lack of security features like biometric login
TSUN Smart
From 1 App Store ratingsWhat we love
- 👍 Easy setup and installation process
- 📊 Clear and intuitive user interface
- 🔌 Simple WiFi connection to inverters
- ⚡ Real-time energy production monitoring
- 🎯 Straightforward configuration with serial numbers
Room to improve
- 🐛 Frequent server outages and disconnections
- 🐛 Missing data and incomplete daily records
- 🌐 Poor German translation with numerous errors
- ⏱️ Slow app performance and sluggish updates
- 📉 Data synchronization delays (15-30 minutes)
Bugs and requests
Fronius Solar.web
Reported bugs
3 issues- Daily production graph not functioning properly
- Inability to log in or add new installations
- Discrepancies between app and web portal data
Requested features
4 requests- Customizable notifications and alerts
- Integration with smart home platforms
- Improved data visualization and export options
- Apple Watch app for at-a-glance monitoring
TSUN Smart
Reported bugs
15 issues- Server connection failures preventing data display
- Missing daily energy data in monthly summaries
- Incorrect total energy calculations
- Data frozen or not updating in real-time
- App crashes or fails to load
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- Verification code not sent during registration
- Inverter configuration mode issues
- Smart Meter integration causing system type changes
- Synchronization problems with multiple micro-inverters
- Daily counter resets losing historical data
- Inconsistent power readings between panels on same roof
- Connection drops between 12-13 hours daily
- Data not recorded after app updates
- Inverter shows offline despite active production
- Micro-inverter pairing failures
Requested features
12 requests- Display daily peak power values consistently
- Real-time data updates on demand (pull-to-refresh)
- Export data in CSV format
- Show maximum inverter capacity information
- Email and push notifications for alerts
Show 7 moreShow fewer
- Ability to adjust power limits directly in app
- Display current firmware version
- Monthly and yearly energy generation summaries
- Larger chart labels and improved layout
- Support for 5GHz WiFi networks
- Improved German language translation
- Better error messages and user guidance
In-app purchases
Fronius Solar.web
No in-app purchases
TSUN Smart
No in-app purchases
