Last updated: March 14, 2026
Overview
SYNC is a rhythm-reaction game developed by Zentrak. We respect your privacy and are committed to protecting it. This policy explains what data SYNC collects, how it is used, and your rights.
Data stored locally
The following data never leaves your device:
- Game progress (best streak, lifetime stats, terminal stage, unlocked achievements)
- Settings (volume, haptics, color theme)
- An anonymous terminal ID derived from your first launch timestamp via one-way hash (e.g., "NODE_A3F2")
Data transmitted to our servers
Anonymous play statistics
Sync count, run duration, run modifier, and whether the run was a "near miss." These are linked only to your anonymous player ID (a random UUID), not to any personal information.
Tap timestamps
The relative timing of each tap during a run (milliseconds since run start) is recorded and submitted with your score. This data is used exclusively for server-side anti-cheat validation of daily challenge scores. Tap timestamps contain no personal information.
Crash reports
If the app crashes, a diagnostic report is sent to Sentry (our crash reporting service). This includes device model, OS version, and the technical stack trace. No personal information is included. Sentry applies automatic PII scrubbing to all reports.
Analytics events
Anonymous session and gameplay events (e.g., session start/end, run completion, frame drop counts) are sent to our backend (Supabase) to help us understand how the game is played and optimize performance.
Device profile (one-time)
On first launch, basic device information (device model, screen size, OS version, and display refresh rate) is collected once for performance optimization. This data is anonymous and linked only to your player ID.
Third parties
- Supabase (backend, hosted in US East) -- Receives anonymous scores, tap timestamps, and analytics events. Acts as a data processor on our behalf. Data is encrypted in transit (TLS) and at rest.
- Sentry (crash reporting) -- Receives anonymous crash diagnostic data only. No gameplay data or player IDs are sent to Sentry.
- Google Play Games Services (optional) -- If you sign in with Google Play Games, your display name and scores may be shared with other players via leaderboards. This is governed by Google's privacy policy.
Data we do not collect
SYNC does not collect, store, or transmit:
- Your name, email address, phone number, or any contact information
- Your location data
- Photos, camera, microphone, or files
- Advertising identifiers or tracking pixels
- Any personally identifiable information (PII)
Permissions
SYNC requests only two permissions:
- VIBRATE -- For haptic feedback during gameplay (can be disabled in settings)
- INTERNET -- For leaderboard sync, crash reporting, and analytics
Data retention
- Anonymous analytics events are retained for 12 months, then automatically deleted.
- Crash reports are retained by Sentry for 90 days.
- Leaderboard scores and tap timestamps are retained indefinitely for anti-cheat and ranking purposes.
- Device profile data is retained for 12 months.
Your rights and data deletion
You can request deletion of all your data at any time:
- In-app -- Open [SYS CONFIG] and tap [DELETE MY DATA]. After confirmation, all your server-side data (scores, analytics events, player record, and authentication) is permanently deleted. Your app resets to a fresh state.
- By email -- Send a deletion request to zentrak.dev@gmail.com with your terminal ID (visible in [SYS CONFIG]). We will process your request within 30 days.
Data deletion is permanent and cannot be undone. Your leaderboard entries, analytics history, and player identity will be removed from our servers.
Children's privacy
SYNC does not knowingly collect data from children under the age of 13. The game does not require account creation or any personal information to play.
Your choices
- Play offline -- SYNC is fully playable without an internet connection. Scores will be queued locally and submitted when you reconnect.
- Haptics -- Can be toggled off in the settings menu.
- Google Play Games -- Sign-in is optional. The game works fully without it.
- Delete your data -- Available in [SYS CONFIG] or by email request.
Changes
We may update this privacy policy from time to time. Any changes will be reflected by the "Last updated" date at the top of each section.
Contact
If you have questions about this privacy policy: