Privacy

Daycurve reads your Apple Health record and shows it back to you. It has no way to send that anywhere, and this page explains exactly what that means.

What Daycurve reads

With your permission, and only the categories you grant, Daycurve reads these from Apple Health:

• Heart — heart rate, resting heart rate, walking heart rate, heart rate variability, and the Apple Watch's own high, low and irregular-rhythm notifications together with atrial fibrillation burden.
• Sleep — sleep analysis and wrist temperature during sleep.
• Breathing — respiratory rate and blood oxygen.
• Activity — steps, active energy, exercise minutes, physical effort, workouts, cardio fitness (VO₂ max) and time in daylight.
• Walking — speed, step length, asymmetry, double-support, stair speeds, walking steadiness and the six-minute walk distance.
• Hearing — environmental and headphone sound levels.
• Body — lean body mass, and your date of birth, which several of the age-based measures need.

You grant these in Apple's own permission sheet, one category at a time, and you can change or revoke any of them at any time in Settings → Privacy & Security → Health → Daycurve. Daycurve never writes anything back into Health.

Health records, only if you ask

If your provider is connected to Apple Health, Daycurve can read lab results from your health records. This is not part of the first-run request and is never asked for on its own — you turn it on deliberately, and Apple then presents its own separate sheet, per record type and per source.

Health-records data is treated exactly like everything else here: read on your device, shown to you, and never transmitted, shared, sold, or used for advertising or marketing of any kind. You can revoke it at any time in the same Settings screen.

What is stored, and where

• A cache of what it has read, so the app and its widgets can draw without re-reading years of history each time. It lives in the app's private container on your device.
• Your journal — the notes you choose to add about a day — as a small file in the app's own storage. It stays on the phone.
• Your settings.

All of it is inside the app's sandbox on your device and is covered by your device passcode and encryption. Deleting Daycurve deletes all of it.

What Daycurve does not do

• No analytics. No crash reporting. No advertising or advertising identifiers.
• No tracking, in the App Store's sense or any other. No profile is built about you.
• No accounts, no sign-in, no email address collected.
• No third-party SDKs of any kind. Daycurve has no external dependencies.

Its App Store privacy label reads Data Not Collected, and that is a description of the binary rather than an intention.

Purchases

If you buy Daycurve, the purchase is handled entirely by Apple. Daycurve receives only whether a purchase is active. It never sees your name, your payment details, or your Apple Account.

Children

Daycurve is not directed at children and collects nothing from anyone.

Changes

If this policy ever changes, the date below changes with it, and any change that affected what leaves your device would be described here plainly.

Contact

Questions about privacy: hello@humannotai.net