Get in touch
Email support@landmarkhabits.com. Please include your iPhone model, iOS version, what you expected and what happened. Do not include private health readings unless they are necessary to explain the issue.
No sleep recorded?
Open the Health app and check whether last night's sleep is recorded. Landmark Sleep shows the newest night that ended after 6 PM yesterday. It does not show an older night as though it were last night. Also check that Apple Health granted Sleep read access.
Why are some rings empty?
Sleep may be recorded by an Apple Watch or another app. Heart, HRV, blood oxygen and breathing readings come from an Apple Watch worn to sleep. If a value was not recorded, the ring says No data.
Why does a ring say New?
A comparison needs three earlier nights with that reading. Until then the current value is shown without a usual marker. The app tells you how many more nights are needed.
Where is my data?
On your iPhone. See Health Data and the Privacy Policy.