Privacy Policy

This Privacy Policy applies to the iOS app named NightSound in English and 呼噜呼噜 in Chinese, as well as this support website. The data controller is the individual developer qinghong meng (“we,” “us,” or “our”).

Please read this policy before use. The app requests one overall consent to the first-party anonymous lifecycle analytics, the latest app version and build number, iOS system version, device model identifier, current app language, device Locale region, and Umeng+ crash and performance diagnostics described in this policy.

Recordings

NightSound records surrounding sound only after you start a recording and allow microphone access. A recording may include your voice, ambient sound, and the voices of other people in the same space.

In addition to recordings made in the app, when you actively select a recording in Apple Voice Memos and send it to NightSound through the iOS system share sheet, the app receives and saves a copy on the current device. NightSound does not read, browse, or bulk-scan your Voice Memos library.

Records and results

To help you review a night, the app stores on your device the time, processing status, “suspected snoring” results, time-trend references, history, and any corrections or labels related to recordings made in the app or recordings you actively import. For an imported recording, the app also processes the original recording start time you confirm and the temporary processing state needed for format conversion and segmentation.

Apple Health (HealthKit) Data

With your explicit permission, NightSound uses read-only access to sleep stages, heart rate, respiratory rate, and blood oxygen data from Apple Health solely to associate their timestamps with suspected snoring records and provide trend references on this device. HealthKit data is read and processed only on this device. It is not uploaded to the developer’s servers, shared with Umeng+ or any other third party, or used for advertising, profiling, or cross-app tracking. NightSound does not write any data to Apple Health.

Support communications

If you email us, we receive the email address, problem description, screenshots, and attachments you choose to send. Do not include private content that is unrelated to your request.

Usage and stability diagnostics

After you consent to this Privacy Policy, the app sends our backend a randomly generated anonymous installation identifier, app cold-launch times, daily activity times, and the latest reported app version and build number, iOS system version, device model identifier, current app language, and device Locale region. The device model identifier is Apple’s technical model code (for example, iPhone14,8), and the current app language is a code such as zh-Hans or en. The device Locale region is a system regional-setting code such as CN, US, or 419; it does not represent a precise location and is not inferred from location permission or an IP address. The app, device, system, language, and region fields store only the most recent valid report and are used to view the installation list and analyze version compatibility and device-system distribution. This information is used only for anonymous lifecycle analytics and stability analysis, not for advertising or cross-app tracking. The app does not upload specific feature actions, recordings, sounds, recognition results, audio-file information, account information, payment information, or advertising identifiers.

Microphone access is used only to start a new recording in the app. You may decline it or turn it off at any time in iOS Settings. When it is off, you cannot start a new in-app recording.

Importing a recording from Apple Voice Memos is an action you initiate through the iOS system share sheet. The import does not require NightSound to access your Voice Memos library and does not depend on microphone access.

Apple Health access is read-only and is used only for sleep stages, heart rate, respiratory rate, and blood oxygen. You may decline permission or turn off the corresponding read permissions in the Apple Health app. Declining or turning off access affects only the health-data time-association display; it does not affect recording, on-device sound analysis, or history. NightSound does not write any data to Apple Health.

The current version does not request Contacts, Photos, Camera, or Location access for recording.

Recordings made in the app and audio you actively import are used only on the current device to:

• For imported audio, verify the original recording start time you confirm;
• Perform audio format conversion and segmentation;
• Generate “suspected snoring” and time-trend references. These results are for trend reference only and do not constitute medical diagnosis or treatment advice;
• Provide recording playback, history, and result display.

Apple Health data you authorize NightSound to read is used only on this device to associate timestamps with suspected snoring records and provide trend references. Temporal proximity does not establish causation and does not constitute a medical diagnosis, treatment advice, or an assessment of your health.

Other information described in this policy is used to:

• Apply your deletion, permission, and privacy choices;
• Answer support and privacy requests;
• After you consent to this Privacy Policy, understand basic usage and identify stability issues;
• Comply with applicable law and protect users, the developer, and the public.

Recordings made in the app, copies you give to NightSound through the system share sheet, and the completed local audio segments, analysis results, and history generated from them are stored on the current device. The current version does not require an account or sign-in and does not offer cloud sync through a developer account.

These recordings, imported copies, and analysis results are not uploaded to the developer’s servers and are not sent to Umeng+ or any other third party. NightSound does not modify or delete the original file in Apple Voice Memos. After analysis finishes, the app may delete the temporary source copy used during import; completed local audio segments, “suspected snoring” results, time-trend references, and history remain under the existing retention rules described in this policy.

Sleep stages, heart rate, respiratory rate, and blood oxygen data read from Apple Health are accessed, processed, and displayed on demand only on this device. They are not uploaded to the developer’s servers, sent to Umeng+ or any other third party, or written back to Apple Health.

Whether iOS device backup or migration includes app data depends on Apple services and your system settings.

Umeng+ crash and performance diagnostics are included in your overall consent to this Privacy Policy. After you consent, limited information described above may be processed by Umeng+. See theUmeng+ Privacy Policy. You can continue using recording and other core features only after consenting to this policy and the Umeng+ processing it includes. If you do not consent, recording core functionality is unavailable.

Umeng+ does not receive your recordings, imported audio, analysis results, or Apple Health (HealthKit) data.

Apple may independently process information related to app downloads, system diagnostics, device backup, or App Store services under its own terms and policies.

The current version does not integrate advertising services or engage in cross-app tracking.

Apple Health (HealthKit) data is read and processed only on this device. We do not upload, sell, transfer, publicly disclose, or share this data with Umeng+ or any other third party.

We do not sell personal information or use recordings for advertising. Apart from the third-party service disclosed above, necessary information may be provided to another party only:

• At your request or with your additional consent;
• When reasonably necessary to protect people or services;
• When required by applicable law or a lawful authority.

In-app recordings and records on your device are generally retained until you delete them.

For a pending, failed, or stopped import item, deleting the item removes the imported copy and its processing state from NightSound.

For a completed import record, you may delete the entire record or delete only the audio held in the app while keeping results and history. No deletion action in NightSound deletes or changes the original recording in Apple Voice Memos. A deletion within NightSound cannot be undone.

Deleting the app generally removes its local data from the device. Data already included in a system backup or device migration remains subject to Apple's rules and your settings.

Support email is retained only as long as reasonably needed to respond, troubleshoot, and meet legal obligations. First-party anonymous lifecycle information and the latest app version, build number, iOS system version, device model identifier, app language, and device Locale region, together with Umeng+ crash and performance diagnostic information, is retained according to applicable law, legitimate need, and the Umeng+ policy.

We use safeguards appropriate to the nature of the information, but no device or service can be guaranteed completely secure. Protect your device passcode and keep the operating system up to date.

NightSound is not directed specifically to children. Minors should use it with a parent or guardian. If an in-app recording or a recording you actively import may include a child or another person, obtain any authorization or consent required by local law before recording or importing it.

• View and delete your in-app recordings, imported recordings, and related records in the app;
• Turn off in iOS Settings the microphone access used only for new in-app recordings;
• Manage or turn off NightSound’s read access to sleep stages, heart rate, respiratory rate, and blood oxygen in the Apple Health app;
• Decide whether to give overall consent to the first-party anonymous lifecycle analytics, the latest app version and build number, iOS system version, device model identifier, current app language, device Locale region, and Umeng+ crash and performance diagnostics described in this Privacy Policy; if you do not consent, recording core functionality is unavailable;
• Ask about, correct, supplement, or request deletion of personal information we actually hold;
• Raise a concern or withdraw consent where applicable.

Because recordings and records are kept primarily on your device, we generally cannot read or restore them from a server. The current version has no in-app entry to separately disable first-party anonymous lifecycle analytics or Umeng+ diagnostics, or to withdraw overall privacy consent. If you want to withdraw consent or exercise rights over information already processed, stop using the app and contact us at the email listed in this policy. Withdrawal does not affect processing already carried out on the basis of consent before withdrawal.

We may update this policy when features, data practices, or legal requirements change. We will update the date and provide an appropriate notice for material changes, asking for new consent where required.

For a privacy question or rights request, emaila617257112@163.com. Include the app version and a description of your request. No private recording is required.