# Fourier App

> Fourier App (iPhone/iPad app by Sthefano Schiavon.)

- Source: https://appshunter.io/ios/app/fourier-app/id6760314201 (this page in markdown: same URL + `.md`)
- Developer: [Sthefano Schiavon](https://appshunter.io/developer/1882733645)
- Category: Education, Graphics & Design
- Price: Free
- Age rating: 4+
- Requires: iOS 13.0 · 27 MB
- Languages: American English, Brazilian Portuguese
- Released: 2026-03-24
- Data updated: 2026-05-15
- User reviews in markdown: https://appshunter.io/ios/app/fourier-app/id6760314201/reviews.md

## What is Fourier App?

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.


## Version history (last 2 releases)

### 2.5.0 — 2026-04-01

add more examples

### 1.0 — 2026-03-24

No release notes.

## More apps by Sthefano Schiavon

- [Root Locus Plotter](https://appshunter.io/ios/app/root-locus-plotter/id6760122394)
- [iSmith Chart](https://appshunter.io/ios/app/ismith-chart/id6760685457)

All apps by Sthefano Schiavon: https://appshunter.io/developer/1882733645

## Related topics

[ntconvolution](https://appshunter.io/ios/topics/ntconvolution)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-15.*