# Herz Stromax R vs KAN Multi App

The clearest difference is update cadence: KAN Multi App at every 3 months against Herz Stromax R's every 7 months. Herz Stromax R's advantage is iOS requirement (11.0 vs 15.0). 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.

Herz Stromax R ships an update every 7 months, KAN Multi App every 3 months. The most recent releases landed on November 1, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Herz Stromax R | KAN Multi App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/herz-stromax-r/id824165722/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 4 MB | 76 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aleksandar Jovanovic](https://appshunter.io/developer/598691474) | [KAN-therm GmbH](https://appshunter.io/developer/1088230769) |

## What reviewers say

### Herz Stromax R

[App page](https://appshunter.io/ios/app/herz-stromax-r/id824165722)

This application calculates optimal balancing valve presets for HVAC systems. It visually highlights valves within the optimal operational range, replacing manual data sheet lookups with an intuitive interface. All calculations are verified and official.

**Highlights:** Optimal valve preset calculation, HVAC system condition input, Visual operational range highlighting, Replaces data sheet procedures, Verified laboratory values

**Features:** macOS Compatibility

**In-app purchases:** none


### KAN Multi App

[App page](https://appshunter.io/ios/app/kan-multi-app/id1351764348)

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

**In-app purchases:** none


## Frequently asked questions

### Is Herz Stromax R free?

Herz Stromax R is free to download, with no in-app purchases.

### Is KAN Multi App free?

KAN Multi App is free to download, with no in-app purchases.

### Do Herz Stromax R or KAN Multi App have ads?

Neither Herz Stromax R nor KAN Multi App shows ads.

### Which is updated more often, Herz Stromax R or KAN Multi App?

Herz Stromax R ships an update every 7 months, and KAN Multi App every 3 months. Most recently, Herz Stromax R was updated on November 1, 2026 and KAN Multi App on October 29, 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.*