My old cell phone broke, so yesterday I went out and upgraded to a Motorola Droid Maxx smartphone. Also got Better Half one as an anniversary present (she is supporting my aviation habit!). So I have been sitting here sipping my coffee and looking at aviation apps for android. Just came across a $10 USD ADS-B receiver app, which requires the Avare app. Both apps are free, with the $10 price tag for the hardware receiver, which I guess is a USB plug in originally for European TV reception. Being a ham radio operator and frustrated radio astronomer (I have an aversion to starving---not many paying jobs in that area:gig, I was quite interested in the little USB receiver, and may investigate it further for other non-aviation apps. I know there are some old threads on smartphone apps here on HBA, but was also wondering what the latest/best apps were for flight instruments and navigation.