ShiftNest Privacy Policy

Last updated: September 17, 2026
Effective date: September 17, 2026

1. Information We Collect

The App follows the principle of data minimization and collects only what is necessary to deliver its core features. We do not collect personally identifying information such as your name, phone number, or ID number.

1.1 Information you provide

• Sleep records: sleep entries you add manually, including bedtime, wake time, and sleep quality ratings. This data stays on your device only and is never uploaded to our servers.
• Preferences: settings you configure, such as target sleep duration, wind-down time, morning prep time, regular schedule, and shift settings. This data stays on your device only.
• Custom shifts: shift templates and schedules you create. This data stays on your device only.

1.2 Information collected while you use the App

• Apple Health data (sensitive personal information, requires your explicit permission): after you grant permission, the App reads sleep analysis data from Apple Health (HealthKit). Please note: even though this data is never uploaded to our servers, reading and using it locally still counts as collecting personal information. Health data is sensitive personal information. We read it only with your explicit permission, and only sleep-related data (bedtime, wake time, sleep stages) — never step counts, heart rate, location, or other health data. The data is used solely to show your sleep trends on the analysis screen. It is never uploaded, never shared, and never used for advertising. You can revoke permission at any time in iOS Settings; after that, the App can no longer read HealthKit data.
• Alarm scheduling information: to deliver alarms, the App uses the iOS alarm framework (AlarmKit) to schedule local notifications. Alarm times, labels, and similar details are stored locally on your device and are never uploaded to our servers.
• Device information (anonymous): to improve stability, we may collect anonymous device model, system version, and app version. This information contains nothing that can identify you personally.

1.3 Information we do not collect

• Personally identifying information such as your name, phone number, email address, or ID number
• Your precise location
• Sensitive permission data such as your contacts, photos, microphone, or camera
• Behavioral data such as browsing or search history
• Payment and subscription information — purchases and subscriptions are processed by Apple through the App Store, and we do not receive or store your payment details

2. How We Use Information

We use the information we collect only for the following purposes:

• Delivering core features: calculating and showing your best sleep times based on your shifts and settings; scheduling and managing alarms; recording and displaying your sleep data.
• Improving the experience: using anonymous device information and usage statistics to optimize performance and stability and fix bugs.
• Personalized recommendations: offering sleep advice better matched to your needs based on your sleep records and settings.

We will not use your information for any of the following:

• Sending you marketing or promotional messages
• Selling or renting your personal information to any third party
• Using your sleep data for advertising or user profiling

3. Sharing and Disclosure

We promise not to share your personal information with any third party, except in these cases:

• With your explicit consent: we may share your information with third parties after you clearly agree.
• Legal requirements: we may disclose your information as required by laws, regulations, legal process, litigation, or mandatory requests from government authorities.
• Protecting rights and safety: we may disclose information to the extent reasonably necessary to protect the lawful rights, property, or safety of us, you, or other users.

The App currently includes no third-party SDKs (software development kits), so no third party collects your information through an SDK. If we add any third-party SDK in the future, we will clearly state it in this policy.

4. Storage and Security

4.1 Where information is stored

All your personal information (sleep records, settings, schedules, and so on) is stored locally on your device using iOS UserDefaults and the local file system. We never upload your data to any server.

About Apple Health data: the original HealthKit sleep data is stored and managed by the Apple Health app. The App only reads it after you grant permission. Data that is read may be cached in memory while the app runs for display purposes; it is not written to the app's local files and is never uploaded to any server. The cached data is cleared when the app closes.

4.2 How long information is stored

Your data remains on your device until you delete it or uninstall the app. You can delete an individual sleep record at any time, or reset all data on the settings screen. Uninstalling the app deletes all locally stored data.

4.3 Security

We protect your information with the following measures:

• Data is stored only on your device and never travels over a network, which avoids the risk of network interception
• We use the iOS system's secure storage mechanisms, so your data is protected by the device system
• We collect no personal identity information, so even if your device is lost, your identity is not exposed
• Apple Health access requires your explicit permission and is read only while the app is running

5. Your Rights

Under applicable laws, you have the following rights over your personal information:

• Access: you can view all your sleep records and settings inside the app.
• Correction: you can edit your sleep records, settings, and schedules at any time.
• Deletion: you can delete an individual sleep record, or reset all data on the settings screen. Uninstalling the app deletes all local data.
• Withdrawing consent: you can revoke Apple Health access or notification permission at any time in iOS Settings. After revoking, the related features stop working, but this does not affect processing already carried out.
• Data export: you can export all your sleep data as a JSON file from the settings screen for backup or migration.

6. Protection of Minors

The App is designed mainly for adult shift workers. We do not knowingly collect personal information from minors. If you are a minor, please use the App under the guidance of a parent or guardian and make sure your guardian agrees to your use and to this Privacy Policy.

For jurisdictions that set a specific age of digital consent (for example, 16 under the EU GDPR and 15 in France), "minors" means individuals below that age.

If we discover that we have collected personal information from a minor without guardian consent, we will delete the relevant data as soon as possible.

7. Updates to This Policy

We may revise this Privacy Policy from time to time. When the policy changes materially, we will notify you through an in-app popup, announcement, or similar means. Please review this policy regularly to stay informed about how we protect your privacy.

For material changes, we will obtain your consent before the change takes effect. If you do not agree to the revised policy, you may stop using the App. Continuing to use the App means you accept the revised policy.

8. Disclaimer

The sleep advice, alarm reminders, and sleep analysis provided by the App are for reference only and do not constitute medical advice. They cannot replace diagnosis or treatment by a qualified doctor.

The App is not a regulated medical device and is not intended to diagnose, treat, prevent, or cure any disease. All features are general wellness tools designed to help you manage shift schedules and sleep better.

If you have a sleep disorder, health concern, or need medical advice, please consult a qualified medical professional or doctor. The App accepts no medical responsibility for any health issue arising from its use.

9. Contact Us

If you have any questions, comments, or suggestions about this Privacy Policy, or wish to exercise your rights, please contact us:

Thank you for using ShiftNest. Sleep well!