# iVSP vs EMPASafe

The clearest difference is update cadence: EMPASafe at every 2 weeks against iVSP's every 21 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.

iVSP ships an update every 21 months, EMPASafe every 2 weeks. The most recent releases landed on September 11, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | iVSP | EMPASafe |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ivsp/id1451717453/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 384 MB | 18 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Voith Digital Solutions Inc](https://appshunter.io/developer/1281566238) | [Hiades](https://appshunter.io/developer/1565815173) |

## What reviewers say

### iVSP

[App page](https://appshunter.io/ios/app/ivsp/id1451717453)

Experience ship navigation with Voith propulsion systems. Explore the mechanics and hydrodynamics of Voith Schneider Propellers (VSP) and their unique thrust capabilities on various vessel types. Learn about the innovative technology behind this propulsion system.

**Highlights:** Steer ships with Voith propulsion, Explore Voith Schneider Propeller mechanics, Understand VSP hydrodynamics, Simulate various vessel types, Learn about VSP thrust generation

**Features:** macOS Compatibility

**In-app purchases:** none


### EMPASafe

[App page](https://appshunter.io/ios/app/empasafe/id6478924445)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iVSP free?

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

### Is EMPASafe free?

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

### Do iVSP or EMPASafe have ads?

Neither iVSP nor EMPASafe shows ads.

### Which is updated more often, iVSP or EMPASafe?

iVSP ships an update every 21 months, and EMPASafe every 2 weeks. Most recently, iVSP was updated on September 11, 2026 and EMPASafe on September 10, 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.*