# ESBE vs x

The clearest difference is review sentiment: ESBE at 83% against x's 56%. x's advantage is update cadence (every 6 weeks vs every 5 months) and iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

ESBE ships an update every 5 months, x every 6 weeks. The most recent releases landed on September 10, 2026 and September 2, 2026 respectively.

## The numbers

| Metric | ESBE | x |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **83.3% of reviews** | 56.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 5 MB | 282 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ESBE AB](https://appshunter.io/developer/1287612322) | [Kermi GmbH](https://appshunter.io/developer/879996391) |

## What reviewers say

### ESBE

[App page](https://appshunter.io/ios/app/esbe/id554443104)

This app helps plumbers, installers, and planners select the correct ESBE valve and determine the appropriate Kvs value. It provides technical details on valve series and offers contact information for the company.

**Highlights:** ESBE valve selection tool, Kvs value calculation, Technical information on valve series, Company contact details

**Features:** macOS Compatibility

**In-app purchases:** none


### x

[App page](https://appshunter.io/ios/app/x-center/id1531279688)

Control your heat pump system remotely with this app. Monitor performance, create custom scenes, and view statistics from anywhere. No extra hardware is needed to get started.

**Highlights:** Remote heat pump control, Comprehensive system monitoring, Customizable scenes, Statistics and overviews, Alarm and warning notifications, Dark and light mode

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ESBE free?

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

### Is x free?

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

### Do ESBE or x have ads?

Neither ESBE nor x shows ads.

### Which is updated more often, ESBE or x?

ESBE ships an update every 5 months, and x every 6 weeks. Most recently, ESBE was updated on September 10, 2026 and x on September 2, 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.*