EqualMath

By: 洪涛刘

Geometry、Math Notes、Homework

Features & Capabilities

Find a problem, solve it, and conquer your fear.

Designed for Apple Pencil and iPad, version 3.0.3 now lets you quickly sketch with basic elements — points, lines, and shapes — to support theoretical exploration. Function graphs are included.

Core features are free.But includes some paid features: linked point function, hidden circle and color block function, creating more than 5 folders, radian display in the plane coordinate system, 3D coordinate system, vector arrow, parametric equation, water drop coloring, etc.

Beyond geometry, sticky notes are central: pin them to the canvas to highlight key steps, while unwanted ink can be erased to keep your workspace clean.

Additional Features

Handwritten uppercase letter recognition – instantly names vertices as you draw geometric figures. Turn it off to use freeform handwriting for names.
Export to Photos – one-tap export with no watermark.
Import from Photos – insert an image directly onto the canvas (display only, no recognition). Supports importing PDF files.
Points, lines, and shapes – select what you need. A key highlight: drag from a vertex of any shape to create a new point – no need to open the menu.
Lasso tool – select content or activate locked geometry elements. For points, three selection methods are supported: draw a line near the point, draw a line that passes through the point, or draw a small circle around it.
Paint bucket – fills enclosed geometric figures and regions, dynamically sensing surrounding areas to some extent.
Infinite canvas – the canvas automatically expands in all directions as you add more ink.
Function graphs – plot single-variable expressions and parametric equations.
Multi-point linkage – explore geometric problems involving multiple moving points.
3D coordinate system – the current release introduces a 3D coordinate space where you can place points and set spatial coordinates. More 3D shapes are coming in future updates.