About this app
The application gets as input an open loop transfer function of a control system and calculates and presents its unity feedback closed loop stability by root locus, Bode plot and Nyquist plot.
Latest release
What’s New
Code improvement and bug fixes
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Sep 23, 2026 · 8:55 AM $2.99