7 startups that want to improve your mental health

Calm is a popular app for people who want to relax.

The meditation, sleep and wellness app features calming music, bedtime stories for adults and guided meditation.

The basic app is free, but Calm Premium offers more content, such as advanced meditations, nature scenes and a breathing tool, for $59.99 each year.

Calm has been downloaded about 25 million times since its 2012 launch. Apple named it iPhone app of the year in 2017.

Mindfulness app downloads are on the rise, jumping 36% compared to last year, according to April data from Apptopia, an app analytics firm. Other popular apps include Headspace and Simple Habit.