Stress Mate Privacy Policy

1. Document status and effective date

This policy is effective on 2026-07-31 and describes the current Stress Mate release offered in the Republic of Korea. It will be updated if the distributed build or its included SDKs change.

2. Operator

Stress Mate is operated by Oh Byung-gil (오병길). The operator is responsible for the app behavior described in this policy and for responding to privacy questions.

3. Scope

This policy applies to the Stress Mate iPhone app, its paired Apple Watch app, and the iPhone and Apple Watch widgets. Services provided by Apple or another business, including Apple Health, iCloud, the App Store, and apps selected in the system share sheet, are governed by their own policies.

Stress Mate is not a medical device or diagnostic service. Its stress and recovery information is intended for general wellness reference.

4. Data processed by the app

When the user grants Apple Health access, the app may read the following data on the device:

• heart rate, heart rate variability, resting heart rate, and walking heart rate average
• sleep, workouts, active energy, and step count
• respiratory rate, blood oxygen saturation, VO2 max, and body mass
• mindfulness minutes

Some health types are optional. When access is not granted, the app provides a more limited result without those signals.

The app may process information entered directly by the user, including mood, caffeine, alcohol, hydration, sunlight, breathing, meditation, symptoms, workouts, free-form notes, and breathing-session feedback.

The app may also generate or store on the device health ingestion state, raw and normalized signals, derived statistics, stress and recovery scores, trends and summaries, habit records, notification settings, history and delivery diagnostics, sync reports, and current snapshots for Watch and widgets. The current app does not provide a Stress Mate account or sign-in.

5. Purposes

Data is processed on the device to:

• calculate stress and recovery scores, trends, and health context
• establish personal baselines and assess signal completeness
• summarize workouts, breathing, mindfulness, and habit activity
• decide and suppress duplicate notifications according to user settings
• keep current state aligned across iPhone, paired Watch, and widgets
• produce a user-requested local summary export or delete local data
• diagnose app and delivery state on the device

Health data is not used for advertising or advertising personalization.

6. Storage and device-to-device transfer

App data is stored in the app container, App Group container, or UserDefaults on the user's devices. The iPhone app and widgets share limited snapshots through an App Group. The iPhone and paired Apple Watch may exchange current state, settings summaries, quick logs, breathing completions, feedback, and other functional payloads through Apple's WatchConnectivity framework.

The current release has no remote server or cloud-sync path operated by the Stress Mate operator.

7. Developer collection and third parties

Based on the current release source and privacy manifests, neither the Stress Mate operator nor a third party automatically collects app data on a server. The app contains no remote analytics, advertising, user-tracking, or crash-reporting SDK, and it declares no tracking domain.

Apple Health, WatchConnectivity, WidgetKit, notifications, and the share sheet are operating-system services. If the user selects another app or service in the share sheet, that provider may process the shared data under its own policy.

This description remains valid only after revalidating the exact signed archive submitted to the App Store and its operating configuration. If a server or third-party SDK is added, the collection and sharing disclosures will be updated before distribution.

8. Retention and deletion

The current app does not enforce a time-based automatic retention period. App data may remain on the device until the user deletes it in Settings or the app and related container are removed or replaced.

‘Delete local data’ clears or removes stored wellness summaries, HealthKit-derived records, health-sync state, notification history and diagnostics, habit logs, breathing feedback, and related local records. Notification settings and general preferences such as the theme may remain. The iPhone and its widgets clear current local wellness state immediately. The paired Watch and Watch widgets clear current wellness state and snapshots when they receive the deletion during the next sync.

Deleting local Stress Mate data does not delete data stored in Apple Health. Copies already shared with another app or service must be managed with that recipient. If HealthKit read permission remains available, a later refresh may create new local records from the signals the user still allows.

9. Export and sharing

At the user's request, the app creates a JSON summary containing its generation time and record counts for local data families. The current export does not contain raw HealthKit samples or the contents of habit entries.

The summary is handed to the iOS share sheet only when the user chooses to share it. The user selects the destination, and the destination's privacy policy applies to subsequent processing.

10. Permissions and choices

Users can grant or withdraw access to individual health data types, notifications, and other system permissions in Apple Health and iOS Settings. Declining access may limit some scoring, trend, sync, or notification features.

The current release does not write mindfulness minutes to Apple Health. Its HealthKit authorization request is read-only and the app processes only the signals the user allows. Apple does not disclose individual read-access decisions to the app, so a completed permission request does not mean every listed health type was granted.

Users can request a local summary export or delete local data from app Settings. There is no server account for the user to delete.

11. Children

Stress Mate is not designed specifically for children. The current app does not transmit user data to an operator server or create accounts. Parents and guardians should manage device access, Apple Health permissions, and family use of the app. Any age-consent requirement applicable in the Republic of Korea will be addressed.

12. Security

The app processes local data within Apple's app sandbox, App Group, HealthKit permissions, and device security controls. Users should protect their device with a passcode, install operating-system updates, and verify destinations before sharing. No storage method can guarantee absolute security.

13. Changes to this policy

If data types, purposes, servers, third-party SDKs, retention, deletion, or availability regions change, this policy and the App Store privacy answers will be reviewed together. Material changes will be communicated in the app or on the policy page, and the last-updated date above will be revised.

14. Contact

• Operator: Oh Byung-gil (오병길)
• Privacy contact: snowvil84@gmail.com
• Published policy URL: the canonical HTTPS address of this page
• Legal review: Oh Byung-gil (오병길) · 2026-07-31