Try Apogee free in your browser, with nothing to install and no account. Design a rocket and fly it to space. Stack engines, fuel tanks, and stages in the assembly bay while a live delta-v budget shows whether you can reach orbit, then launch: throttle up, pitch over into a gravity turn, and drop spent stages. Watch your apoapsis and periapsis on the map view as you fight the rocket equation. Missions guide you from clearing the tower to touching space and flying downrange.