Not cell phone Davy here. Ok, I see a number of bike/ gps apps. Seems like a great idea.

I have gone on a number of group rides and they often go from streets to trails to streets again. I'd love to do some of those rides again, but I forget where we went from one street to another. Thinking I could use this to call back a ride Anderson then go by my self.

Also would love it for fitness tracking. I'm out of shape and just getting back into biking to loose weight and find friends

So here is the question. Are these apps free standing on the phone, or are they using up data usage? And, of course, which to use. I use a polar heart monitor as well. Don't know if any would pair with that and give Mr gps, speed, and heart rate info

So what do you guys recommed?