Graph anything
Functions, vertical lines and equations in x and y, such as circles, hyperbolas and curves like sin(x) = cos(y). Poles and jumps are drawn correctly.
In App Store review
Graphing calculator for iPhone and iPad
Math you can see and drag.
Type an equation and it appears on the graph. Define a = 2, get a slider, and watch the curve move. Tap a curve for roots, extrema and slope.
- No account
- No ads
- No tracking
- Works offline
y = a·sin(bx)drag to explore
x² + y² = 9any equation
Live demo
Try Matheo right here
This graph runs in your browser with the same ideas as the app. Edit an equation, drag a slider, hover or tap a curve.
Drag to pan · pinch or Ctrl + scroll to zoom · hover or tap a curve
See it in action
Watch Matheo work
A 30-second preview, and the full tour of everything the app does.
Screenshots
Made for iPhone and iPad
What it does
Everything a graphing calculator needs
A real math keyboard
Fractions, powers, roots, absolute value, subscripts, functions, letters and Greek. Every symbol is one tap away.
Typeset as you type
A live preview shows fractions, exponents and roots the way they are written on paper.
Sliders for any parameter
Write a = 2 and drag. The graph updates live, so you can see what each number does.
Roots, extrema, slope
Tap a curve for intercepts, maxima, minima and intersections. Slide along it to read values, slope and the tangent line, and shade an integral.
Scientific calculator
Degrees and radians, inverse functions, exact fractions, scientific notation, ans and history.
Projects that save themselves
Your work is kept automatically. Share a graph as an image or copy the expressions.
Light, dark and accessible
Portrait and landscape, light and dark mode, Dynamic Type and VoiceOver.
Private by design
Your math stays on your device
0accounts needed
0trackers or ads
0bytes sent anywhere
Questions
Good to know
Does it work offline?
Yes. Matheo needs no internet connection, no account and no sign-in.
How do I make a slider?
Type a parameter such as a = 2 in its own row, then use it in another row, for example y = a·sin(x). Drag the slider under the a = 2 row.
How do I type a fraction or a root?
Use the template keys on the 123 page of the keyboard. The fraction key leaves the cursor in the numerator, and the arrow keys move between the parts.
Where are my projects?
Tap the folder button at the top left of the graph. Projects save automatically and reopen when you launch the app.
Which devices does it support?
iPhone and iPad with iOS 17 or later.
What does it cost?
Matheo is free, with no ads and no in-app purchases.
Coming soon to the App Store
Matheo for iPhone and iPad is in Apple's App Store review. We'll announce it here the moment it's approved. Until then, the full graphing playground above runs in your browser.