What you can do

Waves: Switch between finding frequency, wavelength, or wave speed; use period or frequency as input.
Oscillation: Work with simple harmonic motion relationships alongside your wave practice.
Optics: Focal length from object and image distances, thin-lens (lens) equation, specular reflection, and refraction with refractive indices.
Visual tools: Open the lens diagram and visual wave views to build intuition, not just numbers.
History & scenarios: Reopen past calculations, save scenarios, and copy results for homework or reports.
Design & options
Clean, modern interface with multiple themes (including dark and light styles). A key relationships strip keeps the big formulas in view. Settings let you balance detail: show or hide solution steps to match how deep you want to go.

Privacy
Formulas and history stay on your device; no sign-in is required to use the toolkit.

Built for
Students, tutors, and anyone who wants fast, checkable results while learning waves and optics.