Last updated: October 19, 2026
DeathDay is developed and operated by Zane Industries LLC ("we," "us," or "our"). This Privacy Policy explains how we collect, use, and protect your information when you use the DeathDay iOS application ("App").
By using DeathDay, you agree to the practices described in this policy.
Information you provide directly:
Health data (optional, with your permission):
Usage data (kept on your iPhone):
Your answers, your Apple Health data and your DeathDay are stored only on your iPhone, in the app's own storage. We do not operate servers that store your answers or your Apple Health data, and DeathDay does not put them in iCloud. Like every app's data, they are included in your iCloud or computer backups if you have backups turned on. Those backups belong to your Apple account or your computer; we never see them.
If you sign up for DeathDay news and tips, your email address, and nothing else, is sent to our sign-up service, which passes it to our email provider (Kit).
Subscription state is verified through Apple's StoreKit framework. We do not store payment information.
With your permission, DeathDay reads these from Apple Health: sleep, step count, resting heart rate, blood pressure and cardio fitness (your Apple Watch's VO2 max estimate). It also reads any high blood pressure, sleep apnea, irregular rhythm or AFib History notifications your Apple Watch has recorded. DeathDay never writes to Apple Health. This data is used only on your iPhone to refine your estimate. A Watch notification never changes your estimate by itself: it only asks whether you want to update an answer, which a doctor can confirm. Health data is never sent to us or anyone else, never stored in iCloud by DeathDay, and never used for advertising or marketing. You can turn off access at any time in the Health app under Sharing → Apps → DeathDay.
If "When my DeathDay changes" is on (Settings → Notifications), iOS may let DeathDay refresh in the background now and then. DeathDay then reads your recent sleep and cardio fitness from Apple Health on your iPhone, the same way it does when you open it, to see whether your estimate would move. If it would, you get "Your DeathDay changed. Open to see." Nothing is changed until you open the app, and nothing leaves your iPhone.
"Email My Report" builds your report on your iPhone and opens it in your own Mail app. It is not sent through us. Before Mail opens, the app warns you that the email includes your answers. By default, sensitive answers are left out: health, substances, alcohol, driving record, income and relationship answers and a family loss show only as a group name (Health, Lifestyle, On the road or Personal), with the real years. You can turn on "Show sensitive answers" to include their real names.
Share cards and DeathDay spin videos are made on your iPhone. Before anything is shared, you see the exact image or video. By default, substances, health conditions (prediabetes, mental health conditions, sleep apnea, dementia), your driving record and a brother or sister who has passed away show only as a group name. Years and rank stay real. You can turn on "Show details" for that share; it is off again the next time.
You can lock DeathDay with Face ID (or Touch ID or your passcode) in Settings. It is off by default. Face ID is handled by iOS, and DeathDay never receives your face data. When you leave the app, a cover hides your answers in the app switcher. Notifications and Lock Screen widgets never name a substance, condition, income or driving answer.
The app opens with: "Your answers stay on this phone. No account. They never go to a server. We never see them." The questions and the calculation work offline. The network is used only for the App Store (subscribing) and, if you sign up, to send your email address.
If you give us your email address, we use it only to send you DeathDay news and tips. You can unsubscribe at any time using the link in any email.
DeathDay uses Apple's StoreKit for subscription management and in-app purchases. Apple's privacy policy governs data processed through StoreKit. We do not use third-party analytics, advertising SDKs, or tracking frameworks.
If you provide your email address, we use Kit (ConvertKit) to store it and to deliver email to you. Kit's privacy policy governs data processed through their service. DeathDay may also link to third-party websites and services, and we may earn a commission from purchases made through those links; no health or personal data is transmitted when you tap such a link.
We do not sell, rent, or share your personal information with third parties for marketing or advertising purposes. We do not share your health data with anyone, ever.
We may disclose information if required by law or to protect our legal rights.
Your DeathDay starts from the US Social Security life table and is adjusted with published health research, measured against the average person of your age and sex. The sources are listed in the app (Settings → About → Sources). DeathDay is an estimate, not medical advice. Talk to a doctor before making medical decisions.
DeathDay is not intended for users under the age of 18. We do not knowingly collect personal information from children. If you believe a child has provided us with personal information, please contact us and we will delete it promptly.
Because your data is stored locally on your device, you can delete all data at any time by using the "Reset all data" option in the app's Profile tab, or by deleting the app entirely from your device. This permanently removes all information DeathDay has collected. Reset keeps your reminder settings and your subscription.
We may update this Privacy Policy from time to time. We will notify you of significant changes through the app. The "Last updated" date at the top of this page reflects the most recent revision.
If you have questions about this Privacy Policy, please contact us at: [email protected]