Calm.com has the cleanest UI of any meditation app available. There are a handful of free meditation sessions available but you'll have to shell out some dough to get access to their full catalog. Regardless, it's a good app for anyone who is trying to adopt a life changing habit.
Calm produces mindfulness meditation products, which are accessible to users through various channels: the company’s website, a book, and its primary product, a mindfulness meditation app, available on iPhone and Android devices.
The app features both meditation tools and sleep aids. The meditation area of Calm offers a quick breathing exercise, a daily meditation that teaches mindfulness, several multi-day programs targeting specific issues or goals, and unguided and guided meditation sessions.
The “Sleep” area of the app gives users access to an audio feature called Sleep Stories – bedtime stories for adults. On December 1, 2016, Calm launched an initial range of 23 different sleep-inducing stories, mixing words, music and sound-effects, with the aim of helping adult listeners to sleep.
Calm: Calm the Mind. Change the World (Penguin, 2015), Michael Acton Smith, ISBN978-0241201954