The smartphone is the new toolbox.  Is yours loaded with the latest tools?  CookTools is a suite of design tools in one convenient app  Fan Law Calculator – Quickly determine new operating point from known conditions  Sound Calculator – Compute LwA, dBA, Sones and NC from octave band data  Duct Designer – Quickly calculate rectangular and round duct sizes that meet your system needs  Area Calculator – Compute section properties for round and rectangular shapes  Download today!