# KOSTAL InverterApp vs MultiProtector

The clearest difference is update cadence: KOSTAL InverterApp at every 2 months against MultiProtector's every 6 months. 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.

KOSTAL InverterApp ships an update every 2 months, MultiProtector every 6 months. The most recent releases landed on October 11, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | KOSTAL InverterApp | MultiProtector |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | Free | — |
| Size | 78 MB | 151 MB |
| Requires iOS | 13.0 | **12.2** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KOSTAL Industrie Elektrik GmbH](https://appshunter.io/developer/1436479665) | [NETZSCH Pumpen & Systeme GmbH](https://appshunter.io/developer/1568447514) |

## What reviewers say

### KOSTAL InverterApp

[App page](https://appshunter.io/ios/app/kostal-inverterapp/id1436479666)

Access and manage KOSTAL drive controllers with Bluetooth via your smartphone or tablet. Perform diagnostics, commissioning, and parameter settings remotely. Data records are compatible with PC software for seamless workflow.

**Highlights:** Bluetooth connectivity, Wizard-guided commissioning, Save and copy device settings, Send data records via email, Parameter settings in plain text, Control drive controller, Access process variables, Error analysis and history

**Features:** macOS Compatibility

**In-app purchases:** none


### MultiProtector

[App page](https://appshunter.io/ios/app/multiprotector/id1568447512)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KOSTAL InverterApp free?

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

### Is MultiProtector free?

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

### Do KOSTAL InverterApp or MultiProtector have ads?

Neither KOSTAL InverterApp nor MultiProtector shows ads.

### Which is updated more often, KOSTAL InverterApp or MultiProtector?

KOSTAL InverterApp ships an update every 2 months, and MultiProtector every 6 months. Most recently, KOSTAL InverterApp was updated on October 11, 2026 and MultiProtector on October 8, 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.*