Originally Posted by
SashaSolitaire
Yes, you can. That's what I did for the longest time when I had the Windows Phone (which did not have an app from Lezyne). Just switch the GPS on and go. Come back and sync the ride with a compatible device or computer.
That probably explains why you are happy with it and samkl isn't. For randonneuring all we really care about is the route, which the Wahoo and even the old etrex handle easier and better than the Mega XL. Like anything, how well it works depends on how you intend to use it.