
PCalc turns your iPhone into a fully functional scientific calculator complete with those all-important, but completely unintelligible ‘sign', ‘cosign' and ‘tangent' buttons.
However, in an effort to deter juvenile pranksters, has installed a profanity filter that senses when you're about to turn your iPhone upside down and blocks offending words with a ‘censored' message.
Apple's App Store is very strict about having inappropriate content in apps, and has already banned a number of free and paid-for downloads. Subsequently brands are highly cautious of their app receiving a 17+ rating or falling foul of Apple's scrutiny and being shut out of the App Store altogether.
The profanity filter is available in both the full PCalc app, as well as in the free PCalc Lite. It's Ideal for maths teachers and the very easily offended.