Does igo primo works instead of navgate drive ?

in normal use ( no jailbreak and appextension....) just normal.

 

i've just had a look in itunes, and navgate drive cost now 99€ whereas it was 89...and 79....

and igo primo cost almost twice less !!!!!!!!! completly crazy from pioneer !!! what justify that ?

 

( if it's about "buggy" appradio advanced mode for this app ...??? ok, but not this price )