Your data stays on your machine
Conversations, canvas state and run history are saved to a SQLite file on your own disk. No account and no cloud sync.
./data/geochat-desktop.sqlite
GivenConstructConclude
GeoChat puts an AI assistant and GeoGebra in one desktop math tool. Enter a problem and it plans the construction, writes GeoGebra commands into the canvas, and explains the reasoning behind each step.
macOS and WindowsApache-2.0, open sourceYour data stays local
What GeoChat does
These are the features currently supported in the desktop app.
What is given or stated
Bring your own model key
Add your model provider's API key in settings. Requests go directly from your machine to that provider, without passing through GeoChat.
OpenAI · Anthropic · Google · DeepSeek · Alibaba · OpenRouter
The construction in progress
Write commands into GeoGebra
GeoChat writes real commands into the embedded GeoGebra canvas. The resulting figure can be dragged, measured, and edited further.
O = Intersect(m_1, m_2)
Plane and space, one canvas
The GeoGebra runtime ships inside the app. Plane geometry, coordinate geometry, function graphs and solid geometry all use the same workspace.
What is concluded
See every step
The construction plan, tool calls and reasoning are shown in order so you can check them one by one.
Problem bank and export
Import a local problem bank to work through sets in bulk, and export any canvas as a .ggb file that a student or colleague can open in their own GeoGebra.
*.ggb
How a problem is completed on the canvas
Read, plan, write commands, explain. The desktop app handles all four stages; only model inference needs the network.
Given triangle ABC, construct its circumcircle.
A = (-3, -1)B = (3, -1)C = (1, 3)m_1 = PerpendicularBisector(A, B)m_2 = PerpendicularBisector(B, C)O = Intersect(m_1, m_2)k = Circle(O, A)SetCaption(O, "Circumcenter")Read
Identify the given conditions, constraints and goal.
Plan
Choose the construction order and the geometric objects needed at each step.
Compile
Convert the construction plan into GeoGebra commands and write them into the canvas one by one.
Explain
Explain why these objects produce the requested result.
Full demo
From typed problem to finished figure, shown at real speed.
The desktop app
The canvas is the main view. The chat panel can be collapsed or moved, and model settings live in the app's local settings page.
Questions
- Does it need an internet connection?
- The canvas, database and other local features work offline. Only model inference needs the network; requests go directly from your machine to the provider you configured.
- Does it cost anything?
- The app is free and open source under Apache-2.0. You pay your model provider for your own usage; that billing sits entirely with them, and we neither see it nor take a cut.
- Do my problems get uploaded to you?
- No. We do not run a server that could receive them. Your problem is sent as a prompt to the model provider you configured, and that data is governed by their privacy policy.
- Which model providers are supported?
- OpenAI, Anthropic, Google, DeepSeek, Alibaba Cloud and OpenRouter are configured out of the box, and you can add compatible custom providers and models in settings.
- Is there a Linux build?
- The packaging pipeline currently produces macOS and Windows installers only. Linux works from source, and the repository has full build instructions.
- Why does it say the developer cannot be verified?
- The installers are not code-signed. Signing means paying Apple and a certificate authority every year, which is hard to justify for a solo open-source project right now. The download page has the steps for both platforms.
Install it, give it a problem
Open source, free, no sign-up. All you need to bring is an API key from a model provider.