Wolfram's threat to knock Google down a peg or two was mocked at the time, our Reg reviewer declaring the web service a tool primarily for boffins. However, the computation engine has been tweaked and is now a fundamental part of Siri, helping fanboys who whisper sweet nothings into their iPhone 4Ss get intelligent responses.
Wolfram Alpha is one of the few third-party apps that feeds answers into Apple's voice-controlled know-it-all Siri: Google Maps and Yelp! local search being the other two. Siri works by following commands from users and answering their questions.
The Wolfram-backed Apple service could be one of the biggest threats to Google's search engine: the web giant's supremo Eric Schmidt said as much himself.
Wolfram also gets traffic from Bing and is launching a paid-for premium service today, costing $4.99 a month. ®