Plottron
3D graphing calculator
Free · Designed for iPad. Not verified for macOS.
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), Student’s t
• Cumulative probability density functions
• Inverse CDF functions: Normal (Gaussian), Student’s t
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.
UI fixes and refinements
The developer, Billy Lin, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Billy Lin
- Size
- 2 MB
- Category
- Utilities
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 3 more
- English, French, Japanese, Simplified Chinese
- Age Rating
4+
- 4+
- Copyright
- © 2015-2026