Strava — an app that's now a part of the life of many cycling sports enthusiasts, who cannot imagine training or any physical activity without it. Such devotion has been achieved through a combination of workout diary, GPS tracker, and social networking features.
Calm — an app for meditation that lets you set goals — to reduce anxiety, improve sleep, increase focus, etc. You can choose from high-quality nature backgrounds and sounds. A couple of its functions deserve special mention — there are bedtime stories for better sleeping and the Masterclass section that is not directly related to meditation, but contains a collection of audio master classes on improving the quality of life.
MyFitnessPal — an app for quick and easy calculation of calories, which has become an indispensable aid in maintaining healthy diets for millions of people. It contains a huge and regularly updated, barcode-searchable product database, and many other useful functions.
Headspace — another meditation app that lets you choose a program depending on the level of training, circumstances, and goals. One interesting solution is short minute-long meditation sessions for when you want to clear your mind here and now: Health (to maintain health), Brave (to cope with negative emotions), Happiness (to enhance life quality), Work & Performance (to increase productivity) and others.
Fitbit - a free app with free workouts, nutrition programs, meditation tracks, sleep tools & more that delivers a personalized experience to give you a deeper understanding of your stats and progress while providing insights to help you reach your goals.
WW (Weight Watchers) — the top weight monitoring app. The main benefits of using Weight Watchers are that it works with the overall health of its users rather than just focusing on weight loss.