riki: What's an app? Just kidding! As Tom says, DipTrace is not geared to work with a cell phone but who knows. Maybe someday.
CJ & GRJ: It's not surprising that you seasoned veterans with electronic design would prefer a hands-on approach. You guys know all the jargon. But for lame-brains like me who can easily get lost in a datasheet, its better to rely on leaving dimensional criteria to the experts at Mouser, DigiKey and other electronics distributors.
The other day, while wandering through a datasheet, I came across the terms PDIP and CDIP and wondered if that was an important difference in terms of package dimensions. I had to look it up after staring at the component drawings with tiny, little dimensions in both inches and millimeters. I didn't know that it had to do with plastic vs ceramic materials. You guys don't even have to think about it.
So as Tom likes to say, "We need all the help we can get."