Privacy Policy
Effective Date: April 30, 2026 · Last updated: September 30, 2026
NightOwl ("we," "our," or "the app") is an energy optimization app that helps you understand your daily energy patterns and plan your day accordingly. This policy explains what data we collect, how we use it, and your rights.
The short version: We collect only what we need to generate your energy plan. We never sell your data. You can delete your account and all data at any time.
1. Information We Collect
Account Information
- Email address and display name (from your Google account when you sign in)
- Device timezone (to schedule notifications at the right times)
Chronotype & Schedule Data
- Your responses to the chronotype quiz (8 questions)
- Your chronotype result (Lion, Bear, Wolf, or Dolphin)
- Weekday and weekend sleep/wake times
- Caffeine habits (daily intake count and typical first-caffeine time)
Daily Usage Data
- Energy check-ins (1–5 rating at various times of day)
- Caffeine logs (type and time of each drink you record)
- Sleep and wake times you report each day
Subscription Information
- Subscription status (trial, active, expired) managed through RevenueCat
- We do not collect or store payment card details — all payments are processed by Google Play and RevenueCat
2. How We Use Your Data
- Generate your energy plan: Your chronotype, schedule, and check-in data are used to calculate your personalized daily energy curve, caffeine windows, and focus periods
- Improve accuracy over time: Your check-ins help the app learn your unique patterns and refine predictions
- Send notifications: We use your timezone and schedule to send timely reminders (energy check-ins, caffeine cutoff, morning plan)
- Generate weekly reports: Your data is summarized into weekly insights about sleep consistency, energy trends, and recommendations
3. Data Storage & Security
- Your data is stored securely in Supabase (hosted on AWS infrastructure)
- All data is protected by Row Level Security (RLS) — you can only access your own data
- All connections use HTTPS/TLS encryption in transit
- Authentication is handled via Google OAuth 2.0 through Supabase Auth
- Some data is cached locally on your device using AsyncStorage for offline access
4. Data Retention
- Daily check-ins and logs are retained for 90 days, then automatically aggregated into monthly summaries
- Monthly aggregates are kept for the lifetime of your account
- When you delete your account, your account and all associated data are permanently removed from our servers (in-app deletion is immediate; email requests are completed within 30 days)
5. Data Sharing
We do not sell, rent, or share your personal data with third parties for marketing purposes.
We share data only with the following service providers that are essential to running the app:
- Supabase — database hosting and authentication
- Google — sign-in authentication (OAuth 2.0)
- RevenueCat — subscription management (receives only your anonymous user ID and subscription status)
- Expo / EAS — app updates and push notifications
6. Your Rights
You have the right to:
- Access your data — all your data is visible within the app
- Delete your account and all associated data — in the app under Settings → Delete Account, or by following the steps on our account deletion page / emailing contrastsoftwares@gmail.com. Deleting your account does not cancel a Google Play subscription — cancel it in Google Play first.
- Opt out of notifications — adjustable in the app's notification preferences
- Withdraw consent — you can stop using the app and request deletion at any time
7. Children's Privacy
NightOwl is not intended for children under 13. We do not knowingly collect data from children under 13. If you believe a child has provided us with personal data, please contact us and we will delete it.
8. Notifications & Permissions
- We request notification permission to send energy check-in reminders, caffeine cutoff alerts, and morning plan notifications
- You can disable all notifications from the app's settings or your device settings at any time
- We do not access your contacts, camera, microphone, location, or any other device sensors
9. Changes to This Policy
We may update this privacy policy from time to time. If we make significant changes, we will notify you through the app. The effective date at the top of this page indicates when this policy was last updated.
10. Contact Us
If you have questions about this privacy policy or your data, contact us at:
contrastsoftwares@gmail.com