Last updated: July 4, 2026
ChalkGrid (“we”, “us”, “our”) operates the ChalkGrid app. This Privacy Policy explains what data we collect when you use ChalkGrid, why we collect it, how it is stored and protected, and what rights you have over your data.
By creating an account or using ChalkGrid, you agree to this Privacy Policy.
1. Who Is Responsible for Your Data
Data Controller: ChalkGrid
Contact: privacy@chalkgrid.app
If you have any questions about how your data is handled, please reach out at the email above.
2. What Data We Collect
We collect only the data needed to provide and improve the Service.
Account Data
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Email address — used to create your account, send authentication emails, and allow you to reset your password.
App Usage Data
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Habit data — the names, descriptions, and settings of the habits you create.
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Streak and progress data — your completion records and streak counts for each habit.
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Reminder preferences — notification times you configure for habit reminders.
Subscription Data
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Purchase and subscription status — if you upgrade to ChalkGrid Pro, the purchase is processed by the Apple App Store or Google Play, and a purchase receipt is sent to RevenueCat, our subscription management provider. We never see or store your payment card details.
Technical Data
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Authentication tokens — generated securely by Supabase to keep your session active.
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Push notification tokens — if you enable notifications, an Expo push token, your device platform, and app version are stored to deliver habit reminders and streak nudges.
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Activity timestamps — the time the app was last opened, used to send re-engagement nudges if you become inactive.
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Crash and diagnostic data — if the app crashes or an error occurs, a report (device model, operating system version, app version, and details of the error — linked to your account ID and email if you are signed in) is sent to Sentry so we can diagnose and fix bugs.
We do not collect your name, phone number, location, contacts, or any sensitive personal data.
3. How We Collect Your Data
Data is collected when you:
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Create an account (email address)
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Use the app (habit entries, streaks, reminders)
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Log in or out (authentication tokens)
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Enable notifications (push token, device platform)
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Purchase a Pro subscription (purchase receipt via the app store)
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Experience a crash or error (diagnostic report)
4. Why We Use Your Data
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Provide the Service (authentication, habit tracking) — Contract performance
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Send transactional emails (sign-up confirmation, password reset) — Contract performance
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Process Pro subscriptions (via the app stores and RevenueCat) — Contract performance
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Send reminders and re-engagement notifications you have enabled — Legitimate interest
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Diagnose crashes and fix bugs (crash reports via Sentry) — Legitimate interest
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Comply with legal obligations — Legal obligation
We do not use your data for advertising, profiling, or sell it to third parties.
5. Third-Party Services
Supabase
Supabase provides database and authentication infrastructure. Your data is stored securely on Supabase servers.
Privacy Policy: supabase.com/privacy
Resend
Resend is used to send transactional emails (sign-up confirmation, password reset) from hello@chalkgrid.app.
Privacy Policy: resend.com/privacy
RevenueCat
RevenueCat manages ChalkGrid Pro subscriptions and receives purchase receipts from the Apple App Store and Google Play. Payments themselves are processed by the app stores — we never receive your payment card details.
Privacy Policy: revenuecat.com/privacy
Sentry
Sentry receives crash and error reports (device and app version details, and your account ID and email if signed in) so we can diagnose and fix bugs.
Privacy Policy: sentry.io/privacy
Expo
Expo delivers push notifications (habit reminders, streak nudges) using the push token stored for your device.
Privacy Policy: expo.dev/privacy
6. Data Storage and Security
Your data is stored on Supabase’s infrastructure, which uses industry-standard security measures including encryption at rest and in transit (TLS/HTTPS).
We take reasonable technical and organisational steps to protect your data from unauthorised access, loss, or misuse. However, no method of transmission over the internet is 100% secure.
7. Data Retention
We retain your data for as long as your account is active. If you delete your account, your data is permanently deleted from ChalkGrid’s database. You can delete your account directly from within the App.
8. Your Rights (GDPR)
If you are located in the European Union or European Economic Area, you have the following rights:
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Right to access — request a copy of the personal data we hold about you.
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Right to rectification — ask us to correct inaccurate or incomplete data.
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Right to erasure — ask us to delete your personal data. You can also delete your account directly in the App.
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Right to restriction — ask us to limit how we process your data.
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Right to data portability — receive your personal data in a structured, machine-readable format.
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Right to object — object to processing based on legitimate interest.
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Right to withdraw consent — if processing is based on consent, you can withdraw it at any time.
To exercise any of these rights, contact: privacy@chalkgrid.app
We will respond to requests within 30 days.
9. Children's Privacy
ChalkGrid is not directed at children under the age of 13. We do not knowingly collect personal data from children under 13. If you believe a child has provided personal data, please contact us at privacy@chalkgrid.app and we will delete it promptly.
10. Changes to This Policy
We may update this Privacy Policy from time to time. When we do, we will update the “Last updated” date at the top of this page. For significant changes, we will notify you via the App or by email.
Continued use of ChalkGrid after changes are posted means you accept the updated policy.
11. Contact
ChalkGrid
Email: privacy@chalkgrid.app
App: www.chalkgrid.app