Comparison

BLANCO UNIT App vs KOSTAL Solar 4me

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

BLANCO UNIT App

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The app allows you to control digitally enabled BLANCO products via Bluetooth. You can not only dispense water remotely, the control options also include complete customisation of your BLANCO drink.system. Set the temperature, CO₂ intensity, water hardness and additional appliance features. The app also allows you to quickly order refills when your filter or CO₂ cartridge are empty and provides animated step-by-step instructions on how to change them. The app gives you complete statistics on the product usage and water consumption in your household’s kitchen, like how much sparkling water you drank last week or what amount of boiled water you use per year. In case you need any assistance, remote support for your BLANCO drink.system can be requested via the app. The BLANCO UNIT App works with the drink.systems CHOICE.All as well as drink.soda EVOL-S-Pro (as of Revision F).

About

KOSTAL Solar 4me

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
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KOSTAL Solar 4me – the beginning of another era With KOSTAL Solar 4me, you take the first step toward the future: modern design meets intuitive operation – for maximum transparency and easy control. Conveniently monitor energy generation, consumption, and grid feed-in from anywhere – clearly, intuitively, and with a modern visual presentation. The beginning of more The first release of KOSTAL Solar 4me is aimed at end customers and enables simple monitoring of your system from home. Additional functions from the previous KOSTAL Solar App will be gradually added in upcoming updates – including important features for installers. Energy generation and consumption in focus Keep an eye on all energy flows of your system – now also live within your home network. Compare historical values, identify correlations, and optimize your self-consumption. Clear charts make your energy data immediately understandable. Overview of your systems Keep track of the status of your systems at all times. From the system list, you can go directly to the dashboard of each system – everything at a glance. Clear device status visibility The revised device list shows the current status of all system components at device level. The display is based on the last successful contact with the respective device. Easy wallbox control Control the ENECTOR wallbox directly via the app. After entering your KSEM password once, access remains saved, allowing you to conveniently switch between charging modes – all within your home network. Come to the dark side Experience the app now also in Dark Mode – optimized for low-light conditions and easy on the eyes, day and night. Usage note Certain functions – such as “Easy Access” or “Live data in the home network” – require a PLENTICORE inverter or a KOSTAL Smart Energy Meter in your PV system. Please also ensure that all devices are running the latest firmware version.

Screenshots

BLANCO UNIT App4 screens
KOSTAL Solar 4me4 screens

Verdict

The call

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.

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

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

Scorecard1 real difference · 7 level
BLANCO UNIT App versus KOSTAL Solar 4me: the parameters behind the verdict, then further details
ParameterBLANCO UNIT AppKOSTAL Solar 4me
PriceFreeFree
Positive reviews—90.5% of reviews
Update frequencyEvery 6 weeksEvery 6 weeks
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhoneiPhone, iPod — better
Requires iOS26.015.3 — better
Further details — not scored
Size183 MB189 MB
Age rating4+4+
DeveloperBlanco GmbH + Co KG.KOSTAL Solar Electric GmbH

In-app purchases

None

BLANCO UNIT App

No in-app purchases

None

KOSTAL Solar 4me

No in-app purchases

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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