I use it all the time Works great. Good for basics and allows you to play and plan for all sorts of things.
Awakening into technical world Started here and discovered a new world of technical diving. Calculations via dive planner awakened me. Nice.
V-planner is a standard Excellent program.
Not usable free
TEK SCUBA MUST Wonderful app to calculate deco dives. Lets you decide almost everything to calculate them. I recommend it a lot!!!
V planner Very good