Citymapper offers high-quality subway and bus directions.
MyFitnessPal can help you count calories and offers a big community interested in food and nutrition.
MyFitnessPal is a free app with in-app purchases.
Weather Underground is a great weather app that has actually helped one of our writers figure out how long she should wait under a tree when she was caught out in a rainstorm, thanks to its radar feature.
Weather Underground is a free app, and it costs $1.99 to remove ads.