👋 Overview
Cadence ("we", "our", or "the app") is a personal symptom, mood, and energy tracking tool for iOS. We are committed to protecting your privacy. This policy explains what information the app handles and the choices available to you.
📋 Information We Collect
Information you provide
- Daily log entries — mood, energy, sleep, pain, symptoms, contextual factors, and free-form notes
- Photos and voice notes you choose to attach to a log entry
- Weekly review reflections and Intentions for Tomorrow
- Medications, custom trackers, and flare episodes you add
Information we do NOT collect
- Name, email address, or any account credentials — Cadence has no account system
- Analytics or usage tracking of any kind
- Device identifiers (IDFA, IDFV)
- Precise or approximate location
- Crash reports or analytics beyond what Apple provides to all developers
🍎 Apple HealthKit
With your explicit permission, Cadence can read from and write to Apple HealthKit — prefilling objective data like sleep, wrist temperature, and workouts, and mirroring the symptoms and mood you log.
- HealthKit access is always optional — no feature in Cadence is ever gated behind it
- Data you enter yourself is never overwritten by a HealthKit-sourced value
- Values Cadence reads from Health are kept in a separate, local-only store on your device. They are never synced to iCloud and never included in iCloud backups of Cadence's data — only in a JSON backup file you create yourself
- Symptoms and mood you choose to share are written to Apple Health, where Apple's own privacy protections apply; Cadence can only ever change or remove the entries it wrote itself
- Cadence has no servers, so no HealthKit data is ever sent to us
- We do not share HealthKit data with third parties, advertisers, or analytics services, and it is never used for advertising or marketing
- You can revoke HealthKit permission at any time in Settings → Privacy & Security → Health → Cadence
☁️ iCloud Sync
If iCloud is available, your logs, weekly reviews, medications, trackers, and flares are mirrored to your personal iCloud account via Apple's CloudKit. This data is:
- Accessible only to you, through your own Apple ID
- Used solely to sync your data across your own devices
- Never read, analyzed, or transmitted to us for any other purpose — there is no "us" to send it to, since Cadence has no backend
You can also back up your data to a JSON file from Settings → Backup, independent of iCloud. Restoring a backup merges it with what's already on the device — it never overwrites existing entries.
📎 Attachments
Photos and voice notes you attach to a log entry are stored locally on your device, outside the main data store. They are not included in the JSON backup/restore feature and are not part of Cadence's iCloud sync — they stay on the device you recorded them on.
💳 In-App Purchases
Cadence Pro — a one-time purchase or a monthly subscription — is processed entirely by Apple through the App Store. Cadence checks your purchase using StoreKit 2's own on-device, cryptographically signed transaction records. We do not receive, see, or store your payment information, and there is no server-side receipt check, because Cadence has no server.
🔐 Device Permissions
Cadence asks for each permission only when you choose a feature that needs it, and works without any of them:
- Notifications — local reminders (daily check-in, weekly review, medications, new patterns), scheduled on your device. Nothing is sent from a server.
- Microphone — only while you record a voice note attached to a log entry.
- Photos — you pick photos with Apple's photo picker; Cadence sees only the photos you choose and needs no library access.
- Siri & Shortcuts — a spoken check-in is processed by Apple's Siri; Cadence receives only the mood and energy values.
✨ On-Device Processing
- Pattern insights are calculated on your iPhone from your own entries.
- Week Reflection (iOS 26 and later, on devices that support Apple Intelligence) uses Apple's on-device language model to summarize your week when you tap it. Your entries are not sent to Apple or to us to produce it.
📤 Exports & Sharing
PDF reports, spreadsheets (CSV), and backup files are created on your device, protected with iOS file encryption while your phone is locked, and cleared from Cadence's temporary storage the next time you open the app. They leave your device only when you share them yourself — you choose the recipient. Personal notes are left out of PDF reports unless you turn them on.
🔗 Third-Party Services
None. Cadence is built entirely on Apple's own frameworks — HealthKit, CloudKit, StoreKit, WidgetKit, WatchConnectivity, and App Intents — and does not integrate any third-party analytics, advertising, or backend service. Apple's handling of the data described above is governed by Apple's own Privacy Policy.
👶 Children's Privacy
Cadence is not directed at children under the age of 13. We do not knowingly design the app to collect personal information from children. Because all data is stored locally on-device (and, optionally, in the user's own private iCloud account), a parent or guardian can remove any child's data at any time simply by deleting the app.
🌍 Data Retention & Deletion
Your data stays until you delete it. You can delete any individual entry, medication, tracker, or flare inside the app at any time.
To delete everything:
- On this device: delete the Cadence app. This removes the on-device database, attachments, any Health values Cadence stored locally, and any generated export files.
- In iCloud: deleting the app does not remove the copy in your iCloud account. To remove it, go to Settings → [your name] → iCloud → Manage Account Storage (or Manage Storage) → Cadence → Delete Data.
- In Apple Health: entries Cadence wrote (symptoms, mood) stay in Health until you remove them in the Health app.
Because Cadence has no backend, there is no copy of your data anywhere for us to delete on your behalf — the steps above remove every copy.
🔄 Changes to This Policy
We may update this Privacy Policy from time to time. When we do, we will update the "Last updated" date at the top of this page. Continued use of the app after changes constitutes your acceptance of the revised policy.
✉️ Contact Us
If you have questions or concerns about this Privacy Policy or your data, please contact us:
Cadence Support
carpecarb@icloud.com