Trekr is a hiking planning app created by Carisa Covins, Jerome Ciarkowski, Randa Sakallah, and Samarth Gulati. The app allows users to view and filter lists of hikes, see detailed profiles of individual hikes, and provide feedback on features. Based on user surveys, features like the hike listview and filters received high importance and satisfaction ratings, while the hike profile was also highly important but had lower satisfaction.