NiceSleep

NiceSleep Privacy Policy

Effective date: Nov 1, 2026

This policy explains how NiceSleep (the "Service", including the Android app, the Wear OS watch app and the website www.jxdtw.com/nicesleep) collects, uses, stores, shares and deletes your data. The Service is a wellness and relaxation tool, not a medical device.

1. Data we collect

  • Member account (optional): email, display name, password (stored only as a bcrypt hash; we never see your password) and interface language. You can use free features and make purchases without an account.
  • Purchase records: the plan you bought, the Google Play or PayPal order ID and purchase proof, amount and currency, and subscription expiry. We never receive or store your card or payment account details; payments are handled by Google Play or PayPal.
  • Sign-in credentials: your access tokens are stored on your device. If you choose "Remember me", your password is encrypted in the device's secure storage and never uploaded.
  • On-device usage data: chosen modes, volume, preferred frequencies and sleep sessions stay on your device.
  • Health data (optional, granted on your watch): with a Wear OS watch, the Service reads heart rate and accelerometer (movement) data only during sleep sessions and Alpha calibration, analyzes it on your phone and watch only, never uploads it to our servers and never uses it for advertising. The watch stops reading once deep sleep is detected or you end the session.
  • Notifications: while sleep audio plays, Android shows a "playing" notification so the audio continues with the screen off.
  • Security logs: when you sign in, our server records your IP address and device type (browser/app user agent) to protect your account and prevent abuse.

2. How we use data

  • To create and manage your account and send 6-digit verification codes for sign-up and password reset.
  • To record your paid access (subscription or lifetime) and sync it across your devices.
  • To provide support, handle refunds and prevent fraud or abuse.
  • We do not sell your personal data and do not use it for advertising or cross-app tracking.

3. Third-party services

  • Google: in-app purchases are handled by Google Play; if you are signed in, the purchase proof (product ID, purchase token, order ID) is sent to our server to verify with Google. Heart rate and movement data travel between your phone and watch through the Google Play services Wearable data layer; Google's privacy policy applies.
  • PayPal: website purchases are paid through PayPal; we only receive the transaction ID and result.
  • Email delivery: when we send a verification code, your email address and the code are delivered through our mail server (SMTP).
  • The App uses no advertising or third-party analytics; the website uses Google Analytics to measure traffic. Account and purchase data are stored on servers we manage.

4. Retention and deletion

  • Account data is kept until you delete your account. Verification codes expire after 10 minutes.
  • You can delete your account at any time in the app under Member > Delete account: the account is disabled immediately, you are signed out on all devices, and the email can be used to register again. See the Delete account page.
  • Transaction records are kept for the period required by law for refunds, accounting, legal obligations and fraud prevention.
  • Local data is removed when you delete the app. Deleting your account does not cancel Google Play subscriptions; cancel them in the Play Store under Payments & subscriptions.

Delete account

5. Your rights

  • You can access, correct or delete your account data in the app, or email us for help.
  • You can withdraw heart rate access at any time on the watch under Settings › Apps › NiceSleep › Permissions; without it, the watch features are unavailable.

6. Security

All connections use HTTPS. Passwords, sign-in tokens and verification codes are stored on the server only as hashes.

7. Children

The Service is not directed to children. Minors should use it with the consent and supervision of a parent or guardian.

8. Changes

When this policy changes we publish the new effective date on this page and notify you in the app or on the website for material changes.

9. Contact us

If you have questions about this policy, contact us:
Email: admin@jxdtw.com

Last updated: Nov 1, 2026