Floormapp is described as 'Manage your office floormap Any kind of floormap from a floor plan blueprint to an office photo works, which can be visible only to your colleagues. Drag a nameplate anywhere'. There are more than 25 alternatives to Floormapp for a variety of platforms, including Windows, Mac, Online / Web-based, iPad and Linux. The best alternative is SketchUp, which is free. Other great apps like Floormapp are Sweet Home 3D (Free, Open Source), pCon.planner (Free), magicplan (Freemium) and Assetforge (Paid).
Free online 3D room-planner which allows you to create floor plans, arrange the furniture, change coverings for walls and floor. I't simple and intuitive - You don't need to have special knowledge or education.