Basics: The National Park Service’s free directory of more than 400 hiking, boating, and camping spots in the watershed, spanning six states and DC.
Pro tip: Pair this with the Chesapeake Bay Trust’s field guide to plants and animals.
Rock Creek Park
Basics: At $5.99, this should do more than indicate the park’s restrooms, parking lots, and, strangest of all, maintenance sheds. Missing are trailheads and decent picnic spots.
Pro tip: Try a popular (and free) crowd-sourced app like MapMyHike instead.
Basics: This $1.99 GPS-enabled app suggests best walking routes, and it updates you on exhibit openings and closings.
Pro tip: Don’t miss the pandas IRL because you’re watching them on your phone.
National Gallery of Art
Basics: A host of info such as museum hours and current exhibits, plus high-res versions of 130 artworks, all free.
Pro tip: Keep the kids from ruining your visit and let them listen to the app’s children’s audio tour.
DC Restaurant Violations
Basics: The free app culls Department of Health data to show eateries that flunked inspection.
Pro tip: Nix your pals’ favorite greasy spoon with a well-timed health report.
This article appears in our December 2014 issue of Washingtonian.