Does ATL have an official app?
Yes — the official 'ATL Airport' app is available for iOS and Android. It includes maps, flight status, parking, and amenity finder.
The official Hartsfield-Jackson Atlanta International Airport app is available for free download on iOS and Android (search 'ATL Airport' in the App Store or Google Play). The app includes interactive concourse maps, real-time flight status, parking availability, and an amenity finder for restaurants, shops, lounges, and accessibility services.
Particularly useful features include the in-app navigation (turn-by-turn directions from your current location to a specific gate, restaurant, or amenity), the Plane Train next-arrival timing, and the parking availability tracker for the Hourly and Daily Decks.
The app does not offer security wait time tracking — TSA's separate 'MyTSA' app provides that data and pulls historical wait times for the airport.
Bluetooth and location services should be enabled for the in-app navigation to work properly. The airport's Wi-Fi network supports the app's connectivity needs throughout terminal areas.