# Nyquist App vs Stochastic Signal Processing

The clearest difference is update cadence: Stochastic Signal Processing at every 5 weeks against Nyquist App's every 10 months. Stochastic Signal Processing also leads on ratings volume (6 vs 1). Nyquist App's advantage is rating (5.0 vs 4.7) and iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Nyquist App holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Stochastic Signal Processing has 6 ratings behind it against 1, so its average is the more settled of the two.

Nyquist App ships an update every 10 months, Stochastic Signal Processing every 5 weeks. The most recent releases landed on October 2, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Nyquist App | Stochastic Signal Processing |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/nyquist-app/id1444291209/reviews)** | [4.7 (6 ratings)](https://appshunter.io/ios/app/stochastic-signal-processing/id1450268179/reviews) |
| Number of ratings | 1 | **6** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 22 MB | 73 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Patricia Pauli](https://appshunter.io/developer/1587769862) | [Ian Young](https://appshunter.io/developer/1450268178) |

## What reviewers say

### 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


### Stochastic Signal Processing

[App page](https://appshunter.io/ios/app/stochastic-signal-processing/id1450268179)

Explore the processing of random signals like speech, music, and climate data. This interactive textbook offers dynamic information, films, animations, and 59 real-time laboratory experiments using your device's camera and microphone. It's designed for those with prior signal processing and probability theory knowledge.

**Highlights:** Interactive textbook format, Dynamic information display, Films and animations, 59 laboratory experiments, Real-time signal processing, Homework problems

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

**In-app purchases:** none


## Frequently asked questions

### Is Nyquist App free?

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

### Is Stochastic Signal Processing free?

Stochastic Signal Processing is free to download, with no in-app purchases.

### Which has better reviews, Nyquist App or Stochastic Signal Processing?

Nyquist App is rated higher. Nyquist App averages 5.0 out of 5 from 1 ratings, while Stochastic Signal Processing averages 4.7 from 6 ratings.

### Do Nyquist App or Stochastic Signal Processing have ads?

Neither Nyquist App nor Stochastic Signal Processing shows ads.

### Which is updated more often, Nyquist App or Stochastic Signal Processing?

Nyquist App ships an update every 10 months, and Stochastic Signal Processing every 5 weeks. Most recently, Nyquist App was updated on October 2, 2026 and Stochastic Signal Processing on September 25, 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.*