Projects are saved on this device automatically (no account, no cloud). Export JSON to move a project to another device or keep a backup.
Project
Room shape
Wall lengths
Measure each wall left to right as you face it (inside corner to inside corner).
Ceiling height
Galley: wall A to wall B
Add to wall
Items snap end to end, left to right. Windows and doors go where you set them; cabinets flow around them.