I’m yet to see who has purchased Pocket Ref give it anything but a 5-star review.

The concept is repeated in various niches, too (from different authors): AutoRef focuses on car, Pocket PC Ref for computers, Handyman In-Your-Pocket for… handyman stuff…?, and even Pocket Partner meant for cops, but with a lot of reviews from people who find it useful for dealing with Hazmat stuff.

I think I’m going to have to pick some of these up. They’re pretty slick.