Privacy Policy — Aylin

Last updated: 2026-10-21

Aylin has no account, no advertising, no analytics and no tracking, and no servers of ours. Your records are stored only on your iPhone, and we do not receive them.

What the app stores, and where

• Your records (marked period days, flow, sex, symptoms, notes) and settings: stored in the app's storage on your iPhone. They are not synced to iCloud and not sent to us.
• The widget reads the same records from storage shared between the app and its widget on your iPhone; it writes nothing and sends nothing.
• Reminders are local notifications planned on your iPhone, with the text you wrote. No push server is involved.

Apple Health (optional)

If you turn on “Sync with Apple Health”, Aylin reads menstrual flow and intermenstrual bleeding (spotting) from Health and writes the period days you mark to Health. This stays within your iPhone's Health data and is governed by Health permissions, which you can change in iPhone Settings → Health → Data Access & Devices. We do not receive Health data. If you delete all data in Aylin, period days already written to Health stay there; delete them in the Health app.

Face ID and passcode

The lock uses the system's authentication on your iPhone. Aylin never receives your face data or passcode.

Files you export and reports

Export and the PDF report for a doctor are created on your iPhone. Nothing is sent anywhere until you choose to share the file, and then it goes where you send it.

Purchases

Aylin Plus is a one-time purchase through the App Store. Payment is handled by Apple; we do not receive your payment details or personal information.

How long data is kept and how to delete it

• Your records stay on your iPhone until you remove them: use “Delete all data” in Settings, or delete the app.
• If you use iCloud Backup or a computer backup for your iPhone, those backups may include the app's data under Apple's terms.
• We keep nothing, because we receive nothing.

Children

The app is not directed at children under 13 and collects no data from anyone.

Changes and contact

If this policy changes, the new version will be published on this page with a new date. Questions: support@kohone.net