Headspace

Headspace leads the list backed by over 70 published studies, more than any other app, demonstrating a 28% reduction in stress after just 10 days of use. Its guided meditations, sleep sounds, and focus exercises feature a polished, beginner-friendly interface. Compared to Calm, Headspace offers more structured courses for new users, and it outperforms Woebot in user engagement with a 4.9-star average rating across 2 million reviews.