Calm vs Big Health (Sleepio, Daylight): Which Is Right for You?
Updated September 2026
Compare Calm and Big Health (Sleepio, Daylight) side-by-side. See pricing, features, privacy, and evidence to find the best mental health app for you.
Our Verdict
Calm is our recommendation. Calm offers stronger evidence-based features and better overall value for most users.
Quick Comparison
Our Pick
Calm
Calm is a meditation and sleep app with guided sessions, sleep stories, and relaxation music to reduce stress and improve sleep quality.
Free tier available
Privacy: B+
moderate evidence
Big Health (Sleepio, Daylight)
Big Health makes Sleepio and Daylight—FDA-cleared digital therapeutics for insomnia and anxiety, often free through employer or health plan benefits.
Paid subscription
Privacy: A
high evidence