noun A software application, especially one designed for a phone or tablet.
- Want realtime flight and gate updates? A calorie counter? A remote for your DVD player? Chances are there's an app for it. Smartphones separate themselves in another key area: connectivity
— Popular Science (2005)
- She downloaded a new app to track her workouts.
- The bank's app lets you deposit checks by taking a photo.
- A visual tool can be thought of as a graphics app that generates most of your program's GUI code for you
— Maximum PC (1999)
- Parking is by app, which (when it works) is good. But £7.70 to park is extortionate, so GTR needs to look at reducing that.
— 'Mystery Shopper', About Anglia... and high scores (2025)
