# MPD Simulator vs Nyquist App

The clearest difference is price: Nyquist App at Free against MPD Simulator's $49.99. MPD Simulator's advantage is update cadence (every 4 months vs every 10 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Nyquist App is free to download; MPD Simulator costs $49.99 up front. Neither carries in-app purchases, so what you see is what you pay.

MPD Simulator ships an update every 4 months, Nyquist App every 10 months. The most recent releases landed on November 2, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | MPD Simulator | Nyquist App |
| --- | --- | --- |
| Price | $49.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/nyquist-app/id1444291209/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 10 months |
| Monetization | — | Free |
| Size | 29 MB | 22 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Carlos Moura](https://appshunter.io/developer/407501202) | [Patricia Pauli](https://appshunter.io/developer/1587769862) |

## What reviewers say

### MPD Simulator

[App page](https://appshunter.io/ios/app/mpd-simulator/id1109781805)

**Features:** Vision Pro support

**In-app purchases:** none


### Nyquist App

[App page](https://appshunter.io/ios/app/nyquist-app/id1444291209)

Practice the Nyquist stability criterion to determine closed-loop stability from open-loop frequency response. Developed for an introductory control engineering course, this app offers self-contained content for anyone interested in the topic.

**Highlights:** Nyquist stability criterion practice, Determine closed-loop stability, Frequency response analysis, Self-contained educational content, Developed for control engineering course

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MPD Simulator free?

MPD Simulator costs $49.99, with no in-app purchases.

### Is Nyquist App free?

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

### Do MPD Simulator or Nyquist App have ads?

Neither MPD Simulator nor Nyquist App shows ads.

### Which is updated more often, MPD Simulator or Nyquist App?

MPD Simulator ships an update every 4 months, and Nyquist App every 10 months. Most recently, MPD Simulator was updated on November 2, 2026 and Nyquist App on October 18, 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.*