# Plottron

> 3D graphing calculator

Canonical page: [https://chrome-stats.com/d/id1037723649](https://chrome-stats.com/d/id1037723649)

## Overview

- **ID:** `id1037723649`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Billy Lin
- **Category:** Utilities
- **Rating:** 4.80 / 5 (12 ratings)
- **Version:** 1.8.8
- **Last updated:** 2026-03-27
- **First published:** 2015-09-21
- **Size:** 1.80 MB
- **Data as of:** 2026-09-06
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/plottron/id1037723649)
- **Website:** [http://nixon-development.com/plottron](http://nixon-development.com/plottron)
- **Privacy policy:** [http://nixon-development.com/plottron/privacy.html](http://nixon-development.com/plottron/privacy.html)

## Description

A graphing + scientific calculator.

-2D and 3D graphing
Graphs regular functions, parametric relations, and functions in polar/spherical coordinates.
-Implicit graphing
-Visualization of complex maps w=f(z) featuring domain coloring plots
-For 2D functions: Info mode with tangent line and 2nd-order Taylor approximation

Scientific calculator features:
-User-defined variables and functions
-Symbolic derivative (e.g.: D(x, sin(x)) 
-nCr, nPr, factorial
-Complex numbers
-Live evaluation (calculate as you type)
-Calculation history
-Probability density functions: Binomial, Normal (Gaussian)

Examples:
Implicit graph: cos(X)=sin(Y)
Graph a parabola in Regular mode: X^2
Graph a circle in Parametric mode: cos(T);sin(T)
Set a variable: X=5
Use a variable: X+4: 9
Define a function: f(X)=X+1
Use a defined function: f(2): 3
Symbolic derivative: D(X,sin(X)): cos(X)
Complex magnitude plot in 3D Regular mode: abs(1/cos(X+Yi))

Notes:
-Swipe left for settings.
-Use semicolon (;) to separate functions in parametric relations.
-Swipe down on keypad to show full history. Tap on answer to show keypad again.

## Rankings

- #301,002 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id1037723649)