Build it yourself
Place points, draw lines and circles, then construct parallels, bisectors and intersections. Drag a point and the construction follows.
A new angle on understanding
GeometryHandbook.
Draw it. Move it. Get it.
A geometry workbench in your pocket. Build constructions, explore shapes and see why a theorem holds.
Free download · optional Pro features
App screenshot
184entries
152proofs & derivations
13guided constructions
Why you’ll love it
Get your hands on an abstract idea.
See the proof
Explore plane and solid geometry with precise statements, drawings, worked examples and proofs.
Solve with a picture
Solve triangles and solids with drawings to scale. Pro adds the derivation, substituted values and the steps behind the result.
Take a look
A little closer.
Real screens. A better feel for what’s inside.
FAQ
Good to know
Answers before you get started.
Does it work offline?
Yes. The handbook and its reference content are available offline after installation. Apple Intelligence features also require a compatible device and a downloaded system model.
What is free?
You can download the app for free. The reference handbook stays useful without Pro; additional learning tools and AI features depend on the app’s Pro plan. The App Store and the in-app purchase screen show the current options.
Do I need Apple Intelligence?
No. You can read and use the handbook without it. The AI tutor is optional and requires a compatible iPhone or iPad with Apple Intelligence enabled; supported languages depend on your system.
Which devices can I use?
The app is available for iPhone and iPad. Check the App Store page for the current operating system and device requirements.
See your next geometry problem from a new angle.
Free download · optional Pro features
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