Archisketch is described as 'Scale-aware sketching program ideal for Architects, interior and landscape designers, product designers, design students, or anyone working with design on an iPad' and is a digital painting tool in the photos & graphics category. There are more than 50 alternatives to Archisketch for a variety of platforms, including Windows, Mac, Web-based, Linux and iPad apps. The best Archisketch alternative is Blender, which is both free and Open Source. Other great apps like Archisketch are Sweet Home 3D, SketchUp, LibreCAD and Autodesk AutoCAD.