We could do with a scientific calculator. The bundled calculator doesn't have sqrt or brackets. It's too basic. I know there is an AlmostTI emulation but it's too complex to use with tiny keys that are very hard to press accurately. Another app urgently needed is a wi-fi file transfer. Using bluetooth for file by file transfer is inconvenient and not all PCs have bluetooth. A Parking app using GPS to mark and locate your car would be very useful. In metropolitan centers one can hardly park close to one's destination. These are staples in any platform and I hope they can be filled soon before developers start on more esoteric apps. I hope someone's listening.