Technology guide
Choose a sleep tracker for useful patterns—not perfect scores.
A tracker can make routine changes easier to notice. It cannot diagnose a sleep disorder or replace a clinician’s assessment, so look for a device that helps you observe trends without creating more pressure around sleep.
A practical comparison
Five checks before you subscribe.
Comfort overnightA watch, ring, under-mattress sensor and bedside device all feel different. Choose the form you are likely to keep using.
What it showsPrioritize simple, understandable trends such as routine consistency and sleep timing over a long list of scores.
Battery and chargingCheck whether charging can interrupt the time you intend to track, and how easy it is to maintain while travelling.
Subscription costSeparate the purchase price from required or optional membership fees. Record the total cost over a year.
Data and privacyRead how your data is stored, exported and deleted. A useful tracker should not require you to guess where personal health-related data goes.
Keep the claim accurate
General wellness is not diagnosis.
Many consumer trackers are designed for general wellness. Do not treat a sleep score, oxygen reading or app notification as a diagnosis, and do not delay care for concerning symptoms because a consumer device seems reassuring.
Read the FDA’s general-wellness guidance →A healthier way to use the data
Use a brief check-in, then move on.
Review trends weekly rather than chasing a score every morning. If tracking makes bedtime more stressful, pause it and return to a simpler routine or a written sleep journal.