[Chris Williams]

With all due respect to Don (who has done a lot of fine work on his program), I prefer iFamily. It too is built by a racer (Bob Kodadek). It uses a state of the art, commercially available weather station (from Davis instruments) not the other "designed in the 60's" weather stations that seem to be common in drag racing. And it can use as little as one run to get a solid prediction. In addition, in my opinion based on 25 years in the software business, the user interface is clearer and easier to use. I've used both, and prefer iFamily.