Version 2.5
– Universal app for iPad, iPhone and iPod touch
– iOS4 multitasking
– High resolution retina display supported
– Added more functions: arcsin, arccos, arctan
– Multitouch scrolling
– Recall equations from history
– Email equations directly from the app

Version 2.0
– Additional functions : sin , con , tan , log , ln
– More mathematical constants : pi and e
– One touch copying equations to clipboard
– Memorize lastest answer for using in the following caculation
– Extend vertical space
– Crystal style interface

Version 1.01
– Clear screen by shaking a iPhone
– More various style in writing number 0,6,9
– Improve handwriting recognition accuracy

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