Nyquist App vs Learn Control Systems
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Nyquist App
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.
- Nyquist stability criterion practice
- Determine closed-loop stability
- Frequency response analysis
- Self-contained educational content
- Developed for control engineering course
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In this app, you can practice the Nyquist stability criterion. With the Nyquist stability criterion, you can determine the stability of the closed loop based on the frequency response of the open loop, without explicitly calculating the poles of the closed loop. This app was developed at the Institute for Systems Theory and Automatic Control of the University of Stuttgart and accompanies the course "Einführung in die Regelungstechnik" at the University of Stuttgart. Nevertheless, the content and tasks are self-contained, and we encourage all interested in this topic to play with the app and practice the Nyquist stability criterion.
Learn Control Systems
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This app is a great resource to learn about Control Systems. The app is engineered to make users perfect understanding common Control Systems questions by studying for a very short amount of time. Audio functionality and bookmarking is available throughout the app on chapter, section, study mode and quiz modes. The app will help you learn the correct pronunciation of terminologies used in Control Systems using English language. Following are the main features of this app 1. Supports pronouncing Control Systems terminologies in English Language 2. Uses Text to Speech Engine for Audio Functionality 3. Quizzes 4. Study Mode 5. Bookmarking Study Flashcards and Quiz Questions 6. Progress Indicators for Every Chapter 7. Visualization for Overall Progress
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Verdict
The clearest difference is in-app purchases: Nyquist App at none against Learn Control Systems's 1. Nyquist App also leads on iOS requirement (13.0 vs 15.1). On price, update cadence, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Learn Control Systems sells 1 one-off in-app purchase. Nyquist App asks for nothing beyond the download.
Nyquist App ships an update every 10 months, Learn Control Systems every 16 months. The most recent releases landed on September 14, 2026 and September 9, 2026 respectively.
| Parameter | Nyquist App | Learn Control Systems |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 10 months — better | Every 16 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 22 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | Patricia Pauli | Ghumman Tech LLC |
In-app purchases
Nyquist App
No in-app purchases
Learn Control Systems
- Remove Ads$9.99
Questions
Is Nyquist App free?
Is Learn Control Systems free?
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Which is updated more often, Nyquist App or Learn Control Systems?
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