Mathex is a fully featured Scientific Calculator for Android which looks and operates like a real one.
It has all of the features you expect from a modern Scientific Calculator where you can enter equations as they are written and is also capable of Symbolic Derivatives, Intuitive plotting of functions...
Of course it also features a Physics constant table (with categories), metric conversions, trig functions in deg, rad and grads, fix, sci and eng notations and much much more... (Have a look at the Google Play page for more details)
It is available both in free (lite) and full version (at the price of a coffee).
Let me know if you like it. At least Give it a Try!
Thanks.
Google Play links:
Lite edition: http://play.google.com/store/apps/details?id=com.mathexlite
Full edition: http://play.google.com/store/apps/details?id=com.mathex
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