I was happy to see (via Beyond Search) that Wolfram Alpha dropped the cost of their iPhone/iPad app, originally it was one cent short of $50, now it is a much more reasonable $1.99.
Wolfram Alpha iPhone/iPad App
Published by François Schiettecatte
Entrepreneur and independent consultant creating companies and building complex software systems for clients. Thirty years in software development/engineering/architecture with a strong emphasis in genetic research and information retrieval systems. View all posts by François Schiettecatte