When playing ingress

When playing ingress the 2 main applications that are best for your phone

=   ingress (the original app of course)              
=   ingress intel helper app(on pc log into www.ingress.com/intel )

These are what you........need.

Then if you are feeling daring you could

Install glyph practice, portal calculator, etc.

ALL APPS CAN BE OBTAINED THROUGH GOOGLE PLAY APPSTORE.