I use it on my Samsung Galaxy 10 and it is fantastic. It did cost $50.00 but it is amazing. You do not need a cellular connection all you need is GPS capabilities which is the only reason I went with the Samsung 3 years ago. It was the only on with GPS. I used to velcro the Galaxy to my dash while running and then move it up front with me to get on a spot. I would definitely recommend this app.