Electrical Filters vs Nyquist App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Electrical Filters
Read full descriptionHide full description
Electrical Filter Calculator - Butterworth, Chebyshev, InverseChebyshev, Cauer-Elliptical, Bessel-Thompson Filters, Legendre Filters. Free version only calculates Low-Pass for all filter types and High-Pass for Butterworth and Chebyshev.
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
Read full descriptionHide full description
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.
Screenshots
Verdict
The clearest difference is update cadence: Electrical Filters at monthly against Nyquist App's every 10 months. Electrical Filters also leads on iOS requirement (5.1.1 vs 13.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Electrical Filters ships an update monthly, Nyquist App every 10 months. The most recent releases landed on October 18, 2026 and October 2, 2026 respectively.
| Parameter | Electrical Filters | Nyquist App |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Monthly — better | Every 10 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 5.1.1 — better | 13.0 |
| Further details — not scored | ||
| Size | 7 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Ali Lopez | Patricia Pauli |
In-app purchases
Electrical Filters
No in-app purchases
Nyquist App
No in-app purchases
Questions
Is Electrical Filters free?
Is Nyquist App free?
Do Electrical Filters or Nyquist App have ads?
Which is updated more often, Electrical Filters or Nyquist App?
Other comparisons
