From IKB Design (GB) Ltd:
Psyclone Lite by Silverglance Software provides a toolkit of HVAC psychrometric calculations for low-volume flowrate systems (up to 4000 cfm / 2 m3/s), allowing individual processes to be examined and supply air volume, condition or capacity to calculated. Psyclone Lite can be upgraded to remove flowrate restrictionsPsyclone operates in either metric or imperial units.
What's new in this version:
User interface rewritten, swipes and animations added