[jackalope]

There are times I wish I could leave GPS tracking on all the time, with a simple way to add markers either now or later, and with the ability to share the data with any app I want. There are times I just want to hop on my bike and ride without doing some dance with a finicky GPS app that I have to remember to stop at the end (and hope it doesn't crash during my ride).

[eli]

For what it's worth, any Android phone with Google Now already can track you (albeit without super high resolution) 24/7. It's actually kind of cool; it looks at where you are and how fast you're going to infer walking vs biking vs driving.