# Polynomial Regression — Interpolation & Approximation

> Interpolation & Approximation (iPhone/iPad app by Yuri Morozov.)

- Source: https://appshunter.io/ios/app/polynomial-regression/id6741364702 (this page in markdown: same URL + `.md`)
- Developer: [Yuri Morozov](https://appshunter.io/developer/1582368813)
- Category: Education, Reference
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 4 MB
- Languages: American English
- Released: 2025-02-02
- Data updated: 2025-12-14
- User reviews in markdown: https://appshunter.io/ios/app/polynomial-regression/id6741364702/reviews.md

## What is Polynomial Regression?

Polynomial Regression is your calculator and, more importantly, learning tool.

You will be able to:

* Construct polynomials of up to 20 degrees from either real or complex roots.
* Interpolate polynomials from points by Lagrange, Newton or Vandermonde methods and Quadratic or Cubic splines.
* Perform Least Squares approximation by orthogonal projection, with or without QR factorization, or partial derivatives.
* Learn about each of the algorithms with derivations, proofs, step by step demonstrations, and visual tools.
* Have an option to enter data by either typing or tapping on XY plane, and save data sets between program runs.


## Version history (last 5 releases)

### 2.6 — 2025-12-13

Link to our new statistical app, Discrete Probability (Calculator, Proofs, Graphs).

### 2.5.1 — 2025-09-15

Bug fix

### 2.5 — 2025-08-11

Bug fix, crash prevention.

### 2.4 — 2025-04-26

Link to our new app, 'Math Editor', which is a tool to create Math notes, posters and presentations.

### 2.3 — 2025-04-04

Fixed an issue with e-mail not sending from "About / Contact us" section.

## More apps by Yuri Morozov

- [GraphMath](https://appshunter.io/ios/app/graphmath/id1582680101)
- [Vectors and Planes](https://appshunter.io/ios/app/vectors-and-planes/id1605294727)
- [Matrix Solver Step by Step](https://appshunter.io/ios/app/matrix-solver-step-by-step/id1623894950)
- [Polynomials and Linear Systems](https://appshunter.io/ios/app/polynomials-and-linear-systems/id1642007937)
- [Least Squares Curve Fit](https://appshunter.io/ios/app/least-squares-curve-fit/id6443509668)
- [Drawing with Math](https://appshunter.io/ios/app/drawing-with-math/id6479322887)

All apps by Yuri Morozov: https://appshunter.io/developer/1582368813

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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 2025-12-14.*