Always wanted to build a rocket, but don't know where to start? This is the app for you. Hybrids are easier, safer and simpler than liquid fuel rockets, but still very capable. Choose your propellants, how big you want the rocket to be, and start designing!
This app won't replace experience, or a solid education in math, but it will give you the numbers you need to build a functional rocket engine, without having to know all the equations yourself. Enjoy!