# KOSTAL InverterApp vs Voltara Setup

The clearest difference is iOS requirement: KOSTAL InverterApp at 13.0 against Voltara Setup's 15.0. On price, update cadence, ads and in-app purchases 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, Voltara Setup every 4 months. The most recent releases landed on October 29, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | KOSTAL InverterApp | Voltara Setup |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free | — |
| Size | 78 MB | 6 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KOSTAL Industrie Elektrik GmbH](https://appshunter.io/developer/1436479665) | [Voltara AG](https://appshunter.io/developer/1744554924) |

## 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


### Voltara Setup

[App page](https://appshunter.io/ios/app/voltara-setup/id6756095830)

**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 Voltara Setup free?

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

### Do KOSTAL InverterApp or Voltara Setup have ads?

Neither KOSTAL InverterApp nor Voltara Setup shows ads.

### Which is updated more often, KOSTAL InverterApp or Voltara Setup?

KOSTAL InverterApp ships an update every 2 months, and Voltara Setup every 4 months. Most recently, KOSTAL InverterApp was updated on October 29, 2026 and Voltara Setup on October 28, 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.*