Favorite Droid Apps

RealCalc

Here's my favorite Droid app so far.  It's an RPN calculator from Brain Overspill.  Though not an HP emulation, they've taken the best of calculator UI / PDA design and combined it with an RPN option.

Though I'm not a fan of long press, in this case it's faster than using shift.  For instance in conversion, enter a number (or result of calculation) then hold down the EXP key (not show in outdated photo). A dialog pops up. Select units and it displays all the other forms - very quick and easy.

As noted above, the picture is outdated and also in Algebraic mode - they also have %, Rotate and Swap XY.  When they get around to financial and stat functions, it'll be perfect.  Nice work guys.