# Fronius Solar.web vs KACO NX Setup

The clearest difference is monetization model: KACO NX Setup at free against Fronius Solar.web's free with in-app purchases. KACO NX Setup also leads on iOS requirement (12.1 vs 16.0). Fronius Solar.web's advantage is review sentiment (19% vs 0%) and update cadence (every 3 weeks vs every 2 months). On price, ads, in-app purchases and device support there is nothing between them.

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

Fronius Solar.web ships an update every 3 weeks, KACO NX Setup every 2 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Fronius Solar.web | KACO NX Setup |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.1 (7 ratings)](https://appshunter.io/ios/app/fronius-solarweb/id1528302827/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | **18.9% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 168 MB | 35 MB |
| Requires iOS | 16.0 | **12.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Fronius International GmbH](https://appshunter.io/developer/431601279) | [KACO new energy GmbH](https://appshunter.io/developer/376799826) |

## What reviewers say

### Fronius Solar.web

[App page](https://appshunter.io/ios/app/fronius-solarweb/id1528302827)

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.

**Highlights:** 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

**Features:** iMessage stickers

**In-app purchases:** none

**What reviewers like**

- 🚀 Sleek and intuitive UI
- 👍 Comprehensive monitoring of solar production and consumption
- 🔋 Excellent battery management features

**What reviewers complain about**

- 🐛 Frequent login issues and app crashes
- ⏱️ Slow data updates and laggy performance
- 📉 Inconsistent or missing historical data
- 🔒 Lack of security features like biometric login

**Reported bugs**

- Daily production graph not functioning properly
- Inability to log in or add new installations
- Discrepancies between app and web portal data

**Requested features**

- Customizable notifications and alerts
- Integration with smart home platforms
- Improved data visualization and export options
- Apple Watch app for at-a-glance monitoring


### KACO NX Setup

[App page](https://appshunter.io/ios/app/kaco-nx-setup/id1578206997)

Configure and energize new inverters quickly and comfortably. This app guides you step-by-step through the commissioning process, allowing you to easily set parameters and update inverter software. Feed power into the grid in minutes.

**Highlights:** Step-by-step commissioning, Wi-Fi inverter connection, Parameter configuration, Inverter software updates, Grid feed-in

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Fronius Solar.web free?

Fronius Solar.web is free to download, with no in-app purchases.

### Is KACO NX Setup free?

KACO NX Setup is free to download, with no in-app purchases.

### Do Fronius Solar.web or KACO NX Setup have ads?

Neither Fronius Solar.web nor KACO NX Setup shows ads.

### Which is updated more often, Fronius Solar.web or KACO NX Setup?

Fronius Solar.web ships an update every 3 weeks, and KACO NX Setup every 2 months. Most recently, Fronius Solar.web was updated on November 3, 2026 and KACO NX Setup on November 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*