Privacy Policy — Steadyline

1 Summary (Plain Language)

✓ Your personal logs are stored locally on your device.
✓ If Cloud Sync is enabled, your data is also stored in our cloud (Supabase).
✓ We use third-party services for auth, analytics, payments, and optional AI.
✗ We do not sell your personal data. Ever.

2 Information We Collect

What You Provide

Daily logs: mood, energy, sleep, notes, tags, goals, and other journal fields. Raw notes (if added). Optional email for sign-in.

Device & App Data

App usage and crash data — only when Cloud Sync is FULL and you have opted in. Device identifiers required for analytics and purchase validation.

Health Data (Optional)

If you connect Health Connect: steps and heart rate average. Only accessed after you explicitly grant permission. Never shared.

AI / Analysis Data (Optional)

If AI features are enabled, relevant log content may be sent to third-party AI providers (Groq, Hugging Face) to generate insights. Many AI features run fully on-device.

3 How We Use Your Data

· Provide core app features: logging, insights, analytics.
· Sync your data across devices (when Cloud Sync is enabled).
· Improve stability and detect issues via crash reporting.
· Process purchases and manage subscriptions.
· Generate AI-powered summaries or insights (when enabled).

4 Where Your Data Is Stored

Local storage: Always on your device.

Cloud storage (optional): When Cloud Sync is FULL, data is stored in Supabase (EU region).

If Cloud Sync is OFFLINE, your data stays only on your device — nothing reaches our servers.

5 Data Sharing & Third-Party Services

We do not sell your data. We share only what is needed to run the app:

Supabase

Authentication + cloud sync

Google Sign-In

Optional login

RevenueCat + Google Play

Payments

Firebase

Crashlytics & analytics (opt-in only)

Health Connect

Optional health data

Groq / Hugging Face

Optional AI features

Each of these services has its own privacy policy.

6 Your Choices & Controls

· Use the app fully offline (disable Cloud Sync in Settings).
· Delete all local data in Settings → Delete All My Data.
· Delete your account and all cloud data in Settings → Delete Account.
· Export your logs at any time from the Insights screen.
· Revoke Health Connect permissions anytime in Android settings.
· Opt out of analytics at any time in Settings → Privacy.

7 Security

We use reasonable technical safeguards to protect your data. Local data security depends on your device's protections (screen lock, OS security). Cloud data is encrypted in transit via HTTPS.

8 Children's Privacy

Steadyline is not intended for children under 13. We do not knowingly collect personal data from children under 13.

9 Changes to This Policy

We may update this policy from time to time. The latest version will always be available at steadyline.app/privacy. Continued use of the app after changes constitutes acceptance.

10 Contact

Steadyline

Questions or requests: projectsam07@gmail.com