Click "Floors" button in the toolbar and then click "Add" to add a new floor. To see multiple floors together in 3d mode, click menu button and select floors to show.

Click "Floors" button in the toolbar and then click the button at the top of the screen that shows current height to change it. To adjust height of a single interior wall created with the "Walls" button, click it to select and then click the "edit" button at the top of the screen.

Click interior edge of a wall to select it and then use the second button at the top of the screen to set thickness. Application remembers this value and will apply it when creating new rooms.
To set thickness of all walls, click "Project" button in the toolbar and modify "Exterior wall thickness" field.

You can use lines from "Annotation" category in the symbol toolbar to mark walls. Drag a line close to a wall and it will snap to the wall. Snap distance is configured in the settings: "Spacing between walls and snapped lines" field.
Click here to see how it works.

It is not possible to import floor plans from other apps and edit them in Floor Plan Creator.
You can import PNG and JPEG image of a floor plan and use it as a background to recreate your plan faster. Click "Image background" button at the bottom of "Structure" category in the symbol toolbar and pick the file. When it appears on screen, click "Scale" button in the toolbar to set size of the image.

For a single in-app purchase, you can have only one cloud account active. Creating new account disables synchronization on previous accounts.
If you want to switch to an old account, please contact me.

Your purchase is assigned to your Google account. When you switch to a new account, Google Play temporarily deativates your purchases. Please switch to the old account in Google Play app to restore purchases.

If you did not switch to a new account, then please try to buy the same upgrade again. Google Play will say that you already bought it before and will activate it immediately. You will not be charged again.