Type an exact length (the far end moves), or drag the square end-handles on the canvas.
The teal box is your plot; the dashed line is the buildable area after setbacks. Draw inside it.
Tap one to load it, then move / resize / rename rooms to make it yours. Loading replaces the drawing on the floors it uses.
PNG = a clean drawing sheet of the current floor to share on WhatsApp. DXF opens in AutoCAD / CAD Studio. JSON backs up the whole plan.
Plans are saved on this device. Use the JSON backup in Export to move a plan to another device.