Microsoft’s personal digital assistant for Windows phone Cortana is currently up for download on Android via GooglePlay. Cortana which was previously as a closed testing beta for Android users, now the app is up as a full public beta but strictly for US folks. So if you are in the US and would like to try out Cortana or compare with Google Now, simply head over to the playstore and download.
It should be noted that since Cortana is in it’s beta testing stage, not all devices may be very compatible with it. However, there’s word that the device should work just fine with most Android devices running Android 4.0 Ice Cream Sandwich and above.
Cortana uses Microsoft’s Bing default search engine to look up infos and send the processed data back, so if you are not very comfortable with using bing and would prefer Google as your default search results finder, then Google Now would be a better alternative to Cortana. That said, if you agree and concur to using bing and would like to try out Cortana on your droid, you will need to agree to some mandory terms and conditions in order to become “a tester”, and subsequently be able to actually download Cortana on your droid.