This might be alright if you were able to try it I wouldn't mind paying for this app if I was able to use it and create walls that were the actual inside the measurement I wanted. The wall snapped to, where the program wanted, instead of where I want them. I couldn't get a 12' 6" inside room dimension no matter how hard I tried. Due to this issue I refuse to pay the cost to put the dimensions in. Had I been able to slide the walls the way I wanted them to I would have gladly paid for Extras