Quick Graph Downloads & RevenueQuick Graph · App Store

Quick Graph is a powerful, high-quality graphing calculator for iPhone and iPad, in 2D and 3D.

"The app you need to survive the next semester."
-- Gizmodo

Type an equation and see it right away, written in math notation and drawn in a graph you can move, zoom and rotate with your fingers. Explicit and implicit equations and inequalities, in cartesian, polar, cylindrical and spherical coordinates, all fast and beautiful.

What's inside:
- 2D and 3D graphs with a clean, full-screen design.
- 3D surfaces drawn with Metal: smooth shading, transparency, wireframe, and zoom that fills the screen.
- Adaptive 2D drawing with exact roots and extrema and clean asymptotes.
- Equation groups: show, hide and move several equations together, with a shared n.
- Annotations with Apple Pencil or your finger on 2D graphs.
- A math keyboard with functions, derivatives and more on each key.
- Hyperbolic and inverse functions, min, max, if, derivatives.
- Axes in decimals or multiples of π, and independent zoom on each 2D axis.
- A library of example and saved equations, including groups.
- Share as a link, image or text; copy and paste equations; drag them between windows.
- Light or dark appearance, multiple windows on iPad, and support for iPhone Duo.

Up to 6 equations can be shown at once in the free version. The Advanced Features, a single one-time purchase with no subscription, add:
- More than 6 equations.
- 2D and 3D implicit equations and inequalities.
- The variable n with a slider, to animate your graphs.
- 2D tracing with roots, extrema and intersections.
- Value table.
- External display support.
- Decimal / π axes and polar range settings.

No ads, no subscription. Please visit the website for more details.