Let's start with setup, For iPhone do not usethe scan instruction to download app.ldirectly downloaded from app store.Toregister took three tries to get a code.Afterreceiving the code the setup was quick.Almost forgot to connect phone to ring l hadto put it on the charger. Moving on toperformance. lt's A very handy tool tomonitor heart rate and Sleep patterns.ltwas intriguing to observe my sleep patternsThe app is simple and easy to use. The ringitself is not bolky. l forget its not my regularThe ring is comfortable and fits better thanmy regular one.