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

Quick Graph is the best graphing calculator available on the AppStore!

Top 10 Education app in over 100 countries!
Featured on the App Store in more than 130 countries.

It is a powerful, high quality, graphing calculator that takes full advantage of the multitouch display and the powerful graphing capabilities of the iPad and iPhone, both in 2D and 3D. A simple, yet intuitive interface that makes it easy to enter and/or edit equations and visualize them in mathematical notation.
It's capable of displaying explicit and implicit (opt) equations as well as inequalities (opt) in both 2D and 3D, in all standard coordinate systems: cartesian, polar, spherical and cylindrical, all with amazing speed and beautiful results, which can be copied, emailed or saved to the photo library.

"It's ok to write yet another graphing app, so long as it is the best one. And this is"
-- User review (RightyC1)

Please keep in mind that in this version, you now have to specify y=, x=, z= and so on, whenever you want to plot an equation.

The advanced feature set gives you access to some of the new features, such as implicit graphs and tracing. You need to specify the dependent variable now, since just typing "x^2" without the y=, will assume the expression to be "x^2=0" and will try to plot it as an implicit graph.

Up to 6 equations can be visualized simultaneously, in both 2D and 3D modes, this limitation can be removed by purchasing the advanced feature set. All the features from the original application are present and will remain free.

It also includes an evaluate feature, to evaluate equations at specific points, as well as a library where you can store commonly used equations.

- VGA Output (available with the advanced features package. iPhone 4, 4th gen iPod, and iPad only)
- 2D - 3D equation plotting.
- Library for commonly used equations.
- Wireframe and solid visualization.
- Support for cartesian, polar, cylindrical and spherical coordinate systems.
- Pinch to zoom.
- Drag to rotate - move.
- Swipe to delete equations from the equation list.
- Shake to reset view to original state, or to clear entry fields.
- Double tap to change visualization modes.
- Enhanced 2D mode for great hi-res graphics.
- Adaptive 2D algorithms.
- Enhanced 3D mode with better graphics.
- In-app email so you can share graphics and equations.
- Save to photo library.
- Copy to clipboard.
- Enhanced equation visualization.
- Hyperbolic and Inverse functions.
- New functions such as Min, Max, if.
- Interactive expression evaluation.
- Optionally you can unlock implicit graphs, inequalities and other advanced features (via in-app purchase).
- Turn graphs on/off

The optional advanced feature set includes:
- VGA Out
- 2D tracing.
- 2D and 3D implicit graphs.
- 2D and 3D inequalities.
- Independent 2D zoom
- Roots and Intersections (2D)
- Value Table
- More features to come!

Please visit the website for more details.

PD: thanks to Matthew Hoffman @mhoffman7152, for the Columbus Day ship graph

What’s New

Version 2.8.2

Bug with external displays fixed

Ratings and Reviews

4.9 out of 5
11 Ratings
11 Ratings
..Javahead.. ,

Great app. Please keep adding to the functions.

Great app for visualising functions. To assist in this regard it would be nice to have a bit more control of the graphical representations, such as, line weight or dotted and dashed lines.
It may have the function to limit the domain, but I haven't yet found it, which in itself an issue.
An additional nice to have, would be visualisation of complex functions.

Update with latest version:
It's great to see a developer that listens to its customers.
Can now change line weight, but the selection is global, would be nice to adjust for each function. Can also limit the domain and use Pi on the x and y axis and work in radians.
There a a few other functions that would also be nice such as n!, and a sum and product function.
Keep up the great work thanks.

APEC Disout ,

An Excellent App

This app is amazing and is very useful in times. It can sketch nearly anything. And has excellent features to allow you to save the graph and use it for other purposes like a wallpaper, email attachment or reference. You can input several graphs at once for comparison with other graphs. Just one thing that can be included, is e labeling of the graphs being drawn. Otherthan that, it is excellent. The best graphing application present in the Apple Store.

HRSoftWorks ,

Awesome tool to get in and get out

One of the best formula graphing apps as far as capability and usability for free that I've found. Intuitive input system, very clear graphs, smooth pan/scroll and the basic functionality is built-in. The paid "advanced" functionality is very reasonable and if you exhaust the free parts it makes sense to upgrade.
For me, only missing parametric graphing ability.


6.5 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad and iPod touch.


English, Arabic, Catalan, Czech, Danish, Dutch, Finnish, French, German, Greek, Hebrew, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese

Age Rating
Rated 4+
© 2017 KZ Labs
In-App Purchases
  1. Advanced Features $4.49


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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