Drift Sleep Sound — Support & Privacy
Welcome to the official support and privacy page for Drift Sleep Sound on iOS. Use the quick links below to navigate to the section you need.
Technical Support & FAQ
We want to ensure you have a peaceful and seamless experience with Drift Sleep Sound. If you encounter any issues or have questions, please review the troubleshooting steps below or contact us directly.
Frequently Asked Questions (FAQ)
Q1: How do I restore my Premium purchase?
If you reinstall the App or switch to a new iOS device, you can easily restore your purchase:
- Tap any premium (grayed-out) icon or the timer adjustment buttons to bring up the purchase card.
- Tap the “Restore Purchase” button at the bottom of the card.
- Make sure your device is signed in with the same Apple ID used to make the original purchase.
Q2: Why is there no sound playing?
If you cannot hear any audio, please check the following:
- Selected Sounds: Ensure at least one sound icon is lit up (with a subtle glowing effect).
- System Volume: Check your physical device volume buttons to ensure the system volume is turned up.
- App Volume Slider: Check the volume slider in the bottom control area of the app and ensure it is not set to zero.
- Note: Drift Sleep Sound is configured to play in silent/ring mode, but the physical volume slider must still be turned up.
Q3: How does sound mixing work (Premium feature)?
- Free Tier: You can play 1 free sound at a time. Selecting a new sound will automatically turn off the previous one.
- Premium Tier: You can mix up to 3 sounds simultaneously. Each active sound carries a distinct weight (1st sound = 100% volume, 2nd sound = 70% volume, 3rd sound = 40% volume).
- FIFO Rule: If you select a 4th sound, the earliest activated sound will automatically fade out with a gentle tactile feedback.
Q4: Why is my timer locked at 30:00?
- The free version of the App includes a fixed 30-minute sleep timer.
- Upgrading to the Premium version unlocks customizable timers ranging from 10 to 120 minutes (adjustable in 10-minute increments).
If your issue is not resolved by the FAQ above, or if you have feature requests, please reach out to our technical support team:
- Support Contact: Bin Hua
- Support Email: xaax97@qq.com
- Response Time: We strive to respond to all inquiries within 24–48 hours.
Privacy Policy
Effective Date: May 22, 2026
Your privacy is highly important to us. This Privacy Policy explains our practices regarding the collection, use, and disclosure of information when you use our App.
Personal Data
Drift Sleep Sound does not collect, store, or transmit any of your personal data.
- We do not require you to create an account or provide any personal information (such as your name, email address, or phone number) to use the App.
- All features of the App, including playing white noise, setting timers, and mixing sounds, are designed to run locally on your device.
Local Storage
The App may save certain configuration preferences locally on your iOS device using Apple’s standard storage mechanisms (such as UserDefaults). This includes:
- Your premium version unlock status.
- Your last used custom timer settings (for Premium users).
- Your custom volume preferences.
This data remains strictly on your device and is never uploaded to any external servers.
2. In-App Purchases and Billing
If you purchase the premium upgrade via In-App Purchase:
- Transactions are processed securely and directly by Apple Inc. via the App Store (StoreKit).
- We do not collect, process, or have access to your payment information, credit card details, or billing address.
- To restore your purchase on other iOS devices, the App may query Apple’s App Store servers to verify your receipt. This verification is handled locally or directly through Apple’s secure infrastructure.
3. Third-Party Services
The App does not integrate third-party analytics, tracking SDKs, or advertising networks.
However, since the App is downloaded from and operates on Apple’s iOS platform, your use of the App may be subject to Apple’s standard Privacy Policy and terms regarding device diagnostics and system-level crash reporting (if you have opted-in to share these with developers).
4. Children’s Privacy
Because our App does not collect any personal information, it is safe for users of all ages, including children under the age of 13. We do not knowingly solicit or collect data from children.
5. Changes to This Privacy Policy
We may update our Privacy Policy from time to time. Any changes will be posted on this page with an updated “Effective Date.” You are advised to review this Privacy Policy periodically for any changes.
If you have any questions, suggestions, or feedback regarding this Privacy Policy, please contact us:
- Developer: Bin Hua
- Email: xaax97@qq.com