Terms of use
The rules of using Wonday, written to be read.
Last updated
Draft of November 14, 2026. These terms are an agreement between you and Wonday.
Wellness, not medicine
Wonday is a wellness product. It does not diagnose, treat or prevent any disease, and it is not a medical device. Signals such as “your body may be fighting something” are wellness information, not medical advice. In an emergency, call your local emergency number.
Your account
You must be at least 18 years old. Keep your sign-in secure. You can delete the data on your phone at any time in the app.
Wonday+ subscription
Wonday+ is not available yet. Before it is, these terms will say how billing, free trials and cancellation work.
The Wonday Ring
The ring is not on sale yet. Joining the waitlist is free, does not commit you to buy, and does not guarantee a price, a date, a finish or a size. Orders, shipping, returns and warranty will be described here before sales open.
Acceptable use
Don’t misuse the service, reverse engineer the app or the ring firmware, or use Wonday to harm others.
AI Coach
The Coach can make mistakes. Use your judgment and talk to a professional about health decisions.
Liability and governing law
To be written with a lawyer before launch (#243).