Privacy Policy

Last updated: June 1, 2026

Short version: Tumbly doesn't have a server. Your baby's logs live in your iCloud account, controlled by you. We don't collect, sell, or analyze anything you log. AI features run on your iPhone, not on a remote server.

1. What information Tumbly handles

Tumbly is a logbook app for tracking infant care. You may enter the following information about your baby:

Feedings (timing, type, duration, amount, side, bottle contents, optional notes)
Diapers (timing, contents, optional notes)
Sleep sessions (start, end, optional notes)
Pumping sessions (timing, duration, amount, side, optional notes)
Growth measurements (weight, length, head circumference, source)
Doctor visit notes (date, title, free-text notes)
Your baby's name and birth date
An optional photo you choose from your Photo Library

2. Where your data is stored

All entries are saved into a private database inside your own iCloud account, using Apple's CloudKit service. Tumbly does not operate any server that receives, copies, or has access to your records. Apple secures and syncs your iCloud data the same way it does for Notes, Reminders, Health, and Photos.

If you sign out of iCloud or have iCloud unavailable, your data remains stored locally on your device only.

3. Sharing a baby with another person

You can invite a co-parent, grandparent, or caregiver to share a baby with you. This uses Apple's CloudKit sharing: the invitation is sent through iMessage, Mail, or another share method you choose, and the other person sees the data inside their own copy of Tumbly. Apple manages the share record; Tumbly never sees a list of who is sharing with whom.

4. AI features run on your device

Tumbly uses Apple's on-device "Apple Intelligence" Foundation Models to:

Transcribe voice into structured log entries
Answer questions you ask about your baby's recent activity
Write the narrative summary on the Pediatrician Brief
Generate the optional Baby Profile card

All of these calls run locally on your iPhone. Tumbly does not send your data to OpenAI, Anthropic, Google, or any other AI provider. Apple's on-device model processes the input and returns the result without any of it leaving your device.

5. Voice and microphone

When you tap the microphone button, Tumbly uses Apple's on-device speech recognition to transcribe what you say. Audio is processed locally and is not stored. The transcript is used only to fill in the log entry and is discarded when you save or cancel.

6. Notifications

If you opt in, Tumbly may schedule local notifications to remind you about a likely next feeding time. These are scheduled and delivered by iOS on your device. No notification content passes through a Tumbly server.

7. Purchases

If you choose to unlock Tumbly Pro, the transaction is handled by Apple's App Store and StoreKit. Tumbly only receives a verified confirmation from StoreKit that the purchase was successful; we do not receive your name, email, billing address, card information, or Apple ID. Refund requests are handled by Apple directly.

8. Analytics and tracking

Tumbly contains no third-party analytics, advertising, attribution, or tracking SDKs. We do not measure how often you open the app, which screens you view, or which features you use. We rely on aggregated, anonymized App Store metrics provided by Apple for downloads and crashes only.

9. Children's data

Tumbly is intended to be used by a parent or caregiver to track their own infant's care. The information about an infant is provided and controlled by the adult user. Because Tumbly does not have a server, no infant data is ever transmitted to or held by Tumbly. We do not knowingly collect personal information directly from children.

10. Your rights and control

View and edit: Every entry can be edited or deleted in the app.
Export: Settings → Export Data produces a CSV of every record.
Delete: Settings → Delete Baby and All Data removes everything from your device. iCloud propagates the deletion to your other devices and to anyone sharing with you.
Sign out: Signing out of iCloud severs Tumbly's ability to sync; deleting the app removes the local copy.

11. Disclaimers

Tumbly is a logbook, not medical advice. It cannot diagnose conditions, prescribe treatment, or replace your pediatrician. If you have concerns about your baby's health, contact a qualified healthcare professional.

12. Changes to this policy

If we make material changes to this policy, we will update the "Last updated" date at the top and, where appropriate, notify users in the app on next launch.

13. Contact

Questions, concerns, or requests? Email tumblytracker@gmail.com.