Like using truly smart paper

Ive been using the iOS version for a couple of years: its been my favorite way to calculate scenarios such as budget forecasts or mortgage comparisons. These are tasks I dont do often, but when I do, Soulver makes them all the more bearable because it lets me jot down my thoughts in a way thats similar to what Id do on a piece of paper, only with live calculations. The desktop version looks to make that process even more natural given the increased flexibility of having a full-size keyboard and the rich features available in Mac OS X and my other various utilities such as LaunchBar with its clipboard history. iOS <-> Mac OS X sync is a bonus, if an obvious one.

TL;DR—Soulver costs about the same as a classic Moleskine, and for calculation-based note taking, its well worth the cost of its paper-based cousin.

clozach about Soulver 2