# ViCare vs Klarstein

The clearest difference is in-app purchases: Klarstein at none against ViCare's 2. Klarstein also leads on review sentiment (52% vs 41%) and device support (4 vs 2). ViCare's advantage is ratings volume (1.3K vs 29) and update cadence (every 9 days vs monthly). On price and ads there is nothing between them.

Both are free to download. ViCare sells 2 in-app purchases, starting at $3.99 per month. Klarstein asks for nothing beyond the download.

ViCare holds the better App Store score, 4.5 against 4.3. That said, the two scores are not equally well evidenced: ViCare has 1.3K ratings behind it against 29, so its average is the more settled of the two. Written reviews complicate that: 41% of ViCare's written reviews are positive against 52% of Klarstein's, so the app with the better star average is not the one people write more warmly about.

ViCare ships an update every 9 days, Klarstein monthly. The most recent releases landed on October 22, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | ViCare | Klarstein |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (1.3K ratings)](https://appshunter.io/ios/app/vicare/id964468260/reviews)** | [4.3 (29 ratings)](https://appshunter.io/ios/app/klarstein/id1479571307/reviews) |
| Number of ratings | **1.3K** | 29 |
| Positive reviews | 40.7% of reviews | **52.3% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Monthly |
| Monetization | Free with in-app purchases | **Free** |
| Size | 662 MB | 243 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Viessmann IT Service GmbH](https://appshunter.io/developer/1801739683) | [Chal-Tec GmbH](https://appshunter.io/developer/1300080322) |

## What reviewers say

### ViCare

[App page](https://appshunter.io/ios/app/vicare/id964468260)

Control your home heating system remotely with this app. Adjust temperatures, set schedules, and monitor system status for comfort and energy savings. Receive alerts and manage basic functions from your smartphone.

**Highlights:** Remote heating system control, Set preferred room temperatures, Create daily heating schedules, Monitor system status, Energy cost savings, Holiday program settings

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $3.99 | per month |
| Yearly | $33.99 | per year |

**What reviewers like**

- 🚀 Great app to control heating and hot water
- 📊 Useful data and analytics on energy usage
- 🌟 Intuitive and easy to use interface
- ⏱️ Convenient remote access and control

**What reviewers complain about**

- 🐛 Frequent connection issues and app crashes
- 🔌 Unreliable sync with boiler, settings not always applied
- 🕰️ Limited scheduling and timer options
- 🤔 Confusing and unintuitive user experience

**Reported bugs**

- App fails to load or gets stuck on loading screen
- Settings changes not syncing properly with boiler
- Incorrect time zone and DST adjustments
- Frequent loss of connectivity to boiler

**Requested features**

- Add a simple 'boost' or 'quick on' heating mode
- Provide more granular control over heating and hot water schedules
- Enable integration with smart home platforms like Alexa or HomeKit
- Improve data visualization and historical energy usage tracking


### Klarstein

[App page](https://appshunter.io/ios/app/klarstein/id1479571307)

Control and monitor your smart home devices remotely from anywhere in the world. Organize devices by room, track real-time temperature and humidity, and access guides to learn app features. Stay updated on sales and connect with customer support.

**Highlights:** Remote device control, Real-time monitoring, Room organization, Temperature and humidity tracking, In-app guides, Sales information

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy setup and use
- 📱 Remote control via app
- 🗣️ Alexa and voice assistant integration
- 💡 Scene and automation creation
- 🏠 Home network integration

**What reviewers complain about**

- 🐛 Frequent bugs and glitches
- 📉 Unreliable scheduling
- ❌ App crashes and freezes
- ⚠️ Random resets of settings
- 🔌 Connection issues

**Reported bugs**

- App crashes after update
- Schedules ignored or reset randomly
- Devices turn on/off randomly
- Temperature settings are random
- App does not work after update

**Requested features**

- Dark mode
- Power consumption monitoring
- Siri/HomeKit integration
- Ability to select multiple devices for scenes
- Remove sound on radiator


## Frequently asked questions

### Is ViCare free?

ViCare is free to download, with in-app purchases available.

### Is Klarstein free?

Klarstein is free to download, with no in-app purchases.

### Which has better reviews, ViCare or Klarstein?

ViCare is rated higher. ViCare averages 4.5 out of 5 from 1.3K ratings, while Klarstein averages 4.3 from 29 ratings.

### Do ViCare or Klarstein have ads?

Neither ViCare nor Klarstein shows ads.

### Which is updated more often, ViCare or Klarstein?

ViCare ships an update every 9 days, and Klarstein monthly. Most recently, ViCare was updated on October 22, 2026 and Klarstein on October 19, 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.*