# BLANCO UNIT App vs KOSTAL Solar 4me

The clearest difference is iOS requirement: KOSTAL Solar 4me at 15.3 against BLANCO UNIT App's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | BLANCO UNIT App | KOSTAL Solar 4me |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 90.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | Every 6 weeks |
| Monetization | — | Free |
| Size | 183 MB | 189 MB |
| Requires iOS | 26.0 | **15.3** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Blanco GmbH + Co KG.](https://appshunter.io/developer/667871742) | [KOSTAL Solar Electric GmbH](https://appshunter.io/developer/961587700) |

## What reviewers say

### BLANCO UNIT App

[App page](https://appshunter.io/ios/app/blanco-unit-app/id6446313124)

**In-app purchases:** none


### KOSTAL Solar 4me

[App page](https://appshunter.io/ios/app/kostal-solar-4me/id6744529417)

Monitor your home's energy generation, consumption, and grid feed-in with a modern, intuitive interface. Track all energy flows, compare historical data, and optimize self-consumption. Control compatible wallboxes directly from the app.

**Highlights:** Energy generation and consumption monitoring, Live data within home network, Historical data comparison, System status overview, Device status visibility, Wallbox control, Dark Mode

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

**In-app purchases:** none


## Frequently asked questions

### Is BLANCO UNIT App free?

BLANCO UNIT App is free to download, with no in-app purchases.

### Is KOSTAL Solar 4me free?

KOSTAL Solar 4me is free to download, with no in-app purchases.

### Do BLANCO UNIT App or KOSTAL Solar 4me have ads?

Neither BLANCO UNIT App nor KOSTAL Solar 4me shows ads.

### Which is updated more often, BLANCO UNIT App or KOSTAL Solar 4me?

BLANCO UNIT App ships an update every 6 weeks, and KOSTAL Solar 4me every 6 weeks. Most recently, BLANCO UNIT App was updated on November 3, 2026 and KOSTAL Solar 4me on November 6, 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.*