MathMe.io vs Fourier App

We are working on MathMe.io to improve your math skills and grow your neurons. Just follow the learning path! Exercises level automatically increased as you go.   - Smoothly growing difficulty - Train your brain with us - More features in development In the current version, you can train your verbal counting to a very high level.

Fourier App is an interactive tool for visualizing and computing Fourier Series of piecewise functions. Define custom functions with multiple pieces and discontinuities, choose the time window, and instantly see the original signal x(t) alongside its series approximation s(t). Browse a built-in catalog with classic examples like sine, cosine, step function, rectangular, triangular, ramp, parabola, and more. View the frequency spectrum with an, bn, and cn coefficients, filter partial series terms, and explore how each harmonic contributes to the final waveform. Includes a theory section covering Fourier Series history, equations, and real-world applications such as audio streaming and noise cancellation.