These Terms govern your use of Day One, operated by Ardenholt LLC ("we", "us"). By using Day One, you agree to these Terms.
The service
Day One is software we provide as-is. We will work hard to keep it running and useful, but we offer no uptime guarantee or warranty of fitness for a particular purpose, except where required by law.
Not medical advice
Day One provides tracking, education, and organization — not medical advice, diagnosis, or treatment — and it is not a medical device. Always consult your clinician before starting, stopping, or changing any medication, dose, or treatment plan, and never disregard professional medical advice because of something in Day One. If you think you may be having a medical emergency, call 911 (or your local emergency number) immediately.
Your account
You are responsible for keeping your sign-in credentials secure. Tell us at privacy@ruzylo.dev if you believe your account is compromised.
Acceptable use
- Don't use Day One to harm others.
- Don't attempt to break, probe, or reverse-engineer the service except as permitted by law.
- Don't use it to send spam, harassment, or anything illegal.
Payments & refunds
Where Day One charges (currently via Stripe), prices are shown before checkout. One-time purchases are non-refundable after 14 days. We do not pro-rate refunds for unused time except where required by law.
Auto-renewing subscriptions (Apple App Store)
If you purchase a subscription to Day One through Apple's App Store, the following terms apply, in addition to anything Apple requires:
- Length and title: Day One offers a Monthly auto-renewing subscription at $2.99/month and an Annual auto-renewing subscription at $19.99/year. Both include a 7-day free trial for new subscribers via Apple ID Introductory Offer.
- Free trial: You will not be charged during the 7-day free trial. If you cancel before the trial ends (Settings → Apple ID → Subscriptions), no charge occurs. If you do not cancel, the subscription begins at the end of the trial at the rate above.
- Charging: Payment will be charged to your Apple ID account at confirmation of purchase (or, with a free trial, at the end of the trial period if not canceled).
- Auto-renewal: Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period.
- Renewal charge: Your account will be charged for renewal within 24 hours prior to the end of the current period, at the rate disclosed at purchase.
- Managing & canceling: Subscriptions may be managed and auto-renewal turned off by going to your Account Settings on the App Store after purchase. You cannot cancel the current period of a subscription, but a canceled subscription will not renew.
- Refunds: Refunds for App Store purchases are handled by Apple per their policies — request via reportaproblem.apple.com.
- EULA: Use of Day One is subject to these Terms and our Privacy Policy.
Termination
You can stop using Day One and request deletion at any time (see Privacy). We may suspend access if we reasonably believe you are violating these Terms, with notice where feasible.
Liability
To the maximum extent permitted by law, our aggregate liability for any claim arising from your use of Day One is limited to the amount you paid us in the 12 months before the claim, or $50, whichever is greater.
Governing law
These Terms are governed by the laws of the State of Delaware, USA. Disputes will be resolved in the state and federal courts located in that state.
Changes
If we make material changes, we will email registered users and update this page. Continued use after changes means acceptance.