Your saved spots, notes and photos stay only in this browser on this device: nothing is uploaded, no account. Clearing browser data or closing a private window erases them, so save a backup file for the spots that matter.
Pin a spot, walk back by arrow, no map
One tap pins where you are. To get back, follow one big arrow and the distance. Works with no signal after the first visit.
Location is used only while you save a spot or while the walk-back screen is open and in view. There is no background tracking: with the screen off or the tab closed nothing is tracked and no alert can sound.