According to Archdaily, the 4 Apps every architect should have are…drum roll…and they are:
No. 4 iRhino 3D lets you view your 3D Models any way you want – with a tap or drag of the finger you can easily zoom in, pan out, and even rotate your models.
No. 3 Sketchbook: draw, paint and sketch
No. 2 Morpholio: The Morpholio Project, a group of applications that reinvent creative processes for designers, artists, photographers and any imaginative individual.
No. 1 AutoCad WS: this version let’s you annotate and revise drawings on the go! And it is free.