500px, the photo portfolio website, has launched 500px Insights, a free_iPhone companion app that lets you track your stats while on the go. Insights_is designed to assist with a variety of research-based photo routines related to your posted 500px portfolio. For example, you can view a map of all your geotagged photos, determine your most-used tags and categories, and even use information to decide the best time to upload your photos to the site. The app also lets you track colleagues_in the 500px community by accessing the most viewed, commented, liked, favorited and highest rated photos.