Geometry Pad+ vs Desmos Graphing Calculator

Geometry Pad+ turns your iPad into an infinite canvas for exact plane geometry. Build points, lines, triangles, polygons, circles and conics with a few taps, and they stay exact: a square stays a square, a parallel stays parallel, and an intersection point stays on its crossing however you move things around. Every feature is included. No subscriptions, no in-app purchases. CONSTRUCTIONS THAT STAY CONNECTED • Parallel and perpendicular lines, perpendicular bisectors, tangents, chords and intersection points follow their shapes as you drag them. • Altitudes, medians and angle bisectors of triangles and polygons update as the shape changes. • Right, isosceles and equilateral triangles, squares, rectangles, parallelograms, rhombi and regular polygons keep their kind when you edit them. PRECISION BY TOUCH • Points snap to the grid, to vertices, midpoints, sides and curves, and to the crossings of shapes. • A magnifying glass shows exactly where each point lands. • Type exact coordinates, lengths, radii and angles with the built-in calculator. LIVE MEASUREMENTS • Every shape shows its lengths, angles, slopes, equations, perimeter and area. • Place measurement labels on the canvas. They update as you move the shape. • Show the angles where lines cross with a single tap. CLASSIC INSTRUMENTS AND TRANSFORMATIONS • A compass that draws arcs, and a protractor that draws segments at an exact angle. • Rotate, reflect and translate shapes, or copies of them. SHAPES FROM NUMBERS • Build lines from their equations, triangles from their sides and angles, quadrangles from their sides and an angle, and parabolas and hyperbolas from their equations, with a live preview as you type. WORKSHEETS AND DOCUMENTS • Import a PDF and draw and measure on top of its pages. • Create documents with several pages, on an infinite canvas or on A4 and A3 paper. • Add pictures from the camera or photo library, and notes in text boxes. • Export as an image (with cropping), PDF or SVG, or share the document itself. • Your work saves automatically to the Files app. Documents from the previous Geometry Pad open too. MADE FOR THE CLASSROOM • Cartesian, polar and isometric grids. • Real centimeters and inches on screen. • Seven themes, including chalkboard and blueprint, and full dark mode support. • Apple Pencil, keyboard shortcuts, multitasking and VoiceOver. Geometry Pad+ is for teachers preparing lessons and worksheets, and for students exploring geometry on their own. We'd love to hear from you: tap Share feedback in the app's Help menu.

Explore math with the fast and powerful Desmos Graphing Calculator. Plot any equation, from lines and parabolas to derivatives and Fourier series. Add sliders to demonstrate function transformations, create tables to input and plot data, animate your graphs, and more—all for free. Features: Graphing: Plot polar, cartesian, or parametric graphs. There’s no limit to how many expressions you can graph at one time—and you don’t even need to enter expressions in y= form! Sliders: Adjust values interactively to build intuition, or animate any parameter to visualize its effect on the graph. Tables: Input and plot data, or create an input-output table for any function. Statistics: Find best-fit lines, parabolas, and more. Zooming: Scale the axes independently or at the same time with the pinch of two fingers, or edit the window size manually to get the perfect window. Points of Interest: Touch a curve to show maximums, minimums, and points of intersection. Tap the gray points of interest to see their coordinates. Hold and drag along a curve to see the coordinates change under your finger. Scientific Calculator: Just type in any equation you want to solve and Desmos will show you the answer. It can handle square roots, logs, absolute value, and more. Inequalities: Plot Cartesian and polar inequalities. Accessibility: Read and edit math using a screen reader or a refreshable Braille display, and use audio trace to explore graphs and data through sound. Offline: No internet access required. Visit www.desmos.com to learn more and to see the free browser version of our calculator.