Terms of use
Updated 5 July 2026
Sylph is a wellness and relaxation app. It is provided as-is, without warranties of any kind. It is not a medical device, is not a substitute for professional care, and makes no claim to treat, reduce, relieve, manage or diagnose anxiety, stress disorders, insomnia, panic, blood pressure, heart rate or any other health condition. If you have a health concern, please talk to a qualified professional.
Purchases
Sylph Pro is a one-time in-app purchase handled by Google Play. It unlocks the additional techniques, the custom pattern builder, every visual/haptic/audio theme and the longer session lengths, on any device signed into the same Google account, via Play's normal restore mechanism. Refunds follow Google Play's refund policy.
Sensible use
Stop if a breathing pattern feels uncomfortable or leaves you lightheaded — slower, gentler techniques suit most people better than extended holds. Don't use Sylph while driving or in any situation that needs your full attention.