Privacy Policy

Effective / revised: September 26, 2026

1. Operator and scope

Next Studio (South Korea) operates StreamLine Pulse (com.osj.flowpulse). This policy covers the app and this support website. Privacy contact: dhalska2@gmail.com.

2. On-device game data

The device stores the current level's per-color connection paths and elapsed time, the list of completed level numbers and times, daily puzzle and time trial personal records, and your language, haptics, sound, colorblind mode, and theme settings. To fix app errors, we use Google Firebase Crashlytics to collect crash and unhandled error logs, device model, OS version, app version, and an app installation identifier when the app crashes or hits an unhandled error. This information is not used for advertising or tracking. We do not use a separate analytics SDK, and the app has no push notifications.

3. Sign-in and server storage (Supabase)

The app uses an anonymously issued user ID as the default storage subject. Signing in with Apple or Google links your existing anonymous data to that account. For signed-in users, the in-progress level's paths and completion history are stored per game in Supabase's shared progress store so they can be restored on another device.

4. Ads and your choices

The mobile app shows Google AdMob interstitial ads and optional rewarded ads (for hints). The ad SDK may process your IP address and the approximate location derived from it, device/advertising identifiers, ad interactions such as views and clicks, diagnostic data, and consent status, to serve, measure, and protect against fraud in ads. We do not request precise location access. A consent message is shown depending on your region and choices; on iOS, tracking via the advertising identifier only occurs if you agree to the App Tracking Transparency (ATT) permission request.

5. Account and purchases

Signing in with Apple or Google causes your email, account ID, and authentication/access records to be processed in Supabase for authentication and to link progress across devices. Using an in-app purchase (remove ads, hint packs, theme pack, starter bundle) causes the product/transaction ID, purchase environment, purchase entitlements, and hint balance to be verified and credited via Supabase. We do not collect payment card details; the store handles them directly. In-app purchases are currently supported on iOS only.

6. Server data retention and cross-border processing

Account, purchase entitlement, and hint balance records are kept while we provide and can restore the service, and unnecessary information is deleted on request. Items subject to a transaction dispute or a legal retention obligation are kept only as required. Deleting your account does not delete the store's own transaction records. Servers operated by sub-processors such as Apple, Google, Supabase, and GitHub may be located outside South Korea.

7. Contact and website providers

If you email us, we use your email address, the content of your message, and any attachments you choose to send to respond and resolve the issue. Do not send passwords, authentication codes, or card details. We use Gmail for inquiries and GitHub Pages for website hosting. This page carries no ad or analytics scripts and no input forms. GitHub may process your IP address and access logs for hosting and security.

8. Retention and deletion

Local information remains until the app's storage is cleared. On iOS, use Delete App (Offload App can leave data behind); on Android, use Clear Storage for this app in system settings. Device and cloud backups are managed separately. We keep inquiry information only as long as needed to handle the request, then delete it.

9. Your rights and legal basis

Subject to applicable law, you may request access, correction, deletion, a portable copy, restriction of processing, objection, withdrawal of consent, or review of a decision. You can contact us without discrimination for exercising these rights, and you may file a complaint with your local data protection authority. We may ask for identity verification within a reasonable scope.

10. Children, safeguards, and changes

The game does not require entering personal information. We do not knowingly request personal information from children; if a child sends information through an inquiry, a guardian may contact us to review or delete it. We take reasonable safeguards such as limiting access to inquiry data, but we cannot guarantee absolute security. For material changes we update the date and content here and provide any notice/consent process required by law.