Privacy Policy

Last updated 8 October 2026

Ailyn is built so that your health data never leaves your iPhone. This policy explains what that means in practice.

What Ailyn stores

Your period dates, mood check-ins, journal entries, gratitude notes and similar entries are stored on your device only. They are not sent to us or to anyone else.

Apple Health

If you choose to connect Apple Health, Ailyn reads menstrual flow, sleep, heart rate variability, resting heart rate, workouts, steps and active energy, and can write period dates back to Health. This data is used only on your device to personalise guidance. It is never used for advertising and never shared with third parties. Connecting Apple Health is optional.

On-device intelligence

Ailyn's guidance and conversations are generated by Apple's on-device models. Dictation into your journal is transcribed on your iPhone.

No accounts, no tracking

Ailyn has no sign-up, no servers of its own, no analytics and no third-party SDKs. We cannot see your data because we never receive it.

Purchases

Subscriptions are handled entirely by Apple through the App Store. We do not receive your payment details.

Deleting your data

Deleting the app removes Ailyn's data from your device. Anything Ailyn wrote to Apple Health can be managed in the Health app.

Contact

Questions about privacy: hello@ailynwellness.app