Grapher – Processed and displayed instantly by a powerful math engine

[App] Grapher – Equation Plotter & Solver

Grapher is a fast and effective equation plotter, capable of drawing any function, solving equations and calculating expressions.

Especially if you’re a student, teacher or engineer, this app is made with you in mind! A wide range of predefined functions is available, including trigonometric & hyperbolic functions, differentiation and more. Anything you type will be processed and displayed instantly by a powerful math engine, in both 2D and 3D modes. Furthermore, functions can reference each other by their name.

Grapher is continuously under development, with more features yet to come. Any feedback and bug-reports are greatly appreciated. This free version is ad-supported; please consider buying Grapher Pro to remove all ads and enjoy extra features!

Curve types

Function (e.g. parabola, sine)
Polar (e.g. rose, spiral)
Parametric (e.g. ellipse, Lissajous)
Implicit equation (e.g. conic sections)
Implicit inequality
3D Function (e.g. paraboloid)
3D Parametric curve (e.g. helix)
3D Parametric surface (e.g. sphere, hyperboloid)

More features
Equation solver (numerical)
Find roots, extrema and intersections with other functions
Functions can reference each other
Custom math keyboard
Auto-detect input type
User variable support for numbers and functions
Adjustable parameter range (for polar & parametric curves)
Input history
Plot up to 24 graphs at once
Differentiation (numerical)
Trace graph
Capture screenshots

Note: Mathematical functions should be typed by their names, for example sqrt(x) means √x. Hold a key to see all function names starting with that letter. If something is unclear, be sure to check out the ‘Help’ page as all details are summarized there.

Grapher user reviews :

As a private tutor, this app is a very handy visualization tool for me. It’s really hard to feed the students tasteless equations and harmful if they just memorize. If I can’t make them ‘see’ what those equations actually represent, I feel like I’ve let them down. This app has been quite helpful on that regard. Thanks for the free service and here’s a free virtual hug for the developers

• There is only one developer but thanks a lot anyway! :) I love reading stories like yours, because these situations really are part of my motivation to start and maintain the project: visualization is after all a crucial aspect of (learning) math. Cheers!

It’s actually a little hard to use the app at first, like for plotting greatest integer function you have to write ‘floor(x)’.well i will appreciate if this app can show me a detailed plot.like while using floor (sin(x)) if it could plot sin(x) and then could show the continuity of the function in a different colour,and you can add mathematical signs of certain functions for better usage.otherwise it’s a great app.

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Just awesome. I use this grapher to plot graphs in my homework and solve simple equations. Btw,*They should add integration as an option too and scale for 3d graphs. * Then,I’d give it 5 stars.(I find no reason to give it less stars.)

Helped a lot in visualizing functions! If one gets a visual about how a function looks, then solving a problem becomes easier. Plus, now its an ad-free tool! Thanks!

The application is so superb and awesome. I must confess, the developer did a wonderful job. The ability to choose scale, the ability to plot both quadratic & linear graphs in one graph sheet, finding the roots the roots of quadratic & simultaneous equations. It has helped me a lot in my e-note preparation.

I have a lot of mathematical and scientific software on my Android devices (Maxima, Reduce, Wolfram Mathematica, GeoGebra etc.) but for simple graphing functionality I always come back to this program. It is very flexible and powerful and has everything I need. Thank you very much!

Lightweight and I use it all the time! My only wish is to remove the character limit on function length (it makes a tweet look big).

This app is amazing great work keep it up I saw a guy in the comments saying this app is in my phone since it’s release now I understand why

Best app to draw graph

I am giving it 5 stars. App is really cool and helpful but it can be better if you introduce some easy input keyboard and superscript and subscript feature. Secondly, it becomes little confusing with use of brackets(it takes some time to identify composite functions). Overall, I love the app.

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