Last updated: September 19, 2026
By downloading or using DayZero (“the App”), you agree to these terms.
DayZero is a personal quit-habit tracker: it helps you count sober days, log check-ins, track money saved, and get through cravings. The App runs entirely on your device and stores all your data locally.
DayZero provides motivation, tracking and general health information only. It is not a medical device and does not provide medical advice, diagnosis or treatment. Quitting alcohol, nicotine or other substances can cause withdrawal symptoms; always consult a qualified healthcare professional for medical guidance, especially in cases of severe dependence.
DayZero is free to download with a free tier. Optional Premium features are available through auto-renewing subscriptions (weekly, monthly, yearly) or a one-time Lifetime purchase, billed by Apple through your Apple ID.
All data you enter stays on your device. DayZero collects nothing. See our Privacy Policy for details.
We grant you a personal, non-transferable license to use the App on devices you own or control. You may not resell, redistribute or reverse-engineer the App.
The App is provided “as is” without warranties of any kind. To the maximum extent permitted by law, we disclaim all liability for any damages arising from your use of the App.
We may update these terms from time to time. Continued use of the App after changes constitutes acceptance of the updated terms.
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