The Calm app is a mindfulness app that features meditation practices, calming sounds, ambient music, and sleep stories. It is a software company based in San Francisco, California, that produces meditation products, including guided meditations and Sleep Stories on its subscription-based app. The app is available for iOS, Android, and desktop. Calm has over 100 million downloads and more than 700,000 5-star reviews. The app offers personalized content to manage stress and anxiety, get better sleep, and feel more present in daily life. It features hundreds of calming exercises, helpful breathing techniques, and sleep stories narrated by celebrities like Matthew McConaughey and LeBron James. The app offers an auto-renewing monthly subscription at $14.99/month and an auto-renewing yearly subscription at $69.99/year to provide unlimited access to the Calm Collection while maintaining an active subscription. Calm also offers a Lifetime subscription for $399.99, which is paid for by a one-off upfront payment with unlimited access to the Calm Collection forever. Calm is a science-based mindfulness app that can be used by beginners and experts alike.