tracker
//ˈtræk.ər//
Noun
trackerSingular
trackersPlural
1
A person who follows the trail or tracks of animals or people, especially for hunting or search purposes.
The tracker followed the animal's footprints through the forest.
2
A device or software application used to monitor and record the location, movement, or activity of something or someone.
I installed a GPS tracker on my bicycle to prevent theft.
3
A tool or system used to keep track of progress, data, or information over time.
I use a habit tracker to monitor my daily exercise.