AstroSim is the simulator built for WRO competitors. Write Python, run missions on official maps, and iterate in seconds — no installation required.
Built by robotics coaches, for teams that want to win.
Not Scratch. Not blocks. Real Python powered by Pyodide, running directly in your browser — no server, no delays.
Official competition maps — Junior, Elementary, and Senior — ready to use. Test your mission the moment you write it.
Open the browser and start coding. No downloads, no plugins, no IDE configuration. Works on any device.
Design your robot's geometry from the ground up. Adjust wheel placement, sensor positions, and chassis to match your real build.
Save your projects to the cloud and access them from school, home, or competition day. Available on Basic and Pro plans.
Step through execution, inspect sensor values in real time, and understand exactly what your robot is doing — and why.
Start free. Upgrade when your team needs more.
Free
Basic
Pro
Payments are being set up. Sign up free and request your plan inside the app.