gtsync: Sync Tasks & Reminders

Two-way sync between Google Tasks (including tasks in Google Calendar) and the native Reminders app (including Reminders in the native Calendar app).

A seamless way to keep everything you need to do synchronized across both platforms. gtsync securely connects Google Tasks directly to the native Reminders app. Add a reminder using Siri on your commute, and it's waiting for you alongside your tasks in Google Calendar on your laptop. Check an item off in your browser, and it clears from your iPhone. One unified workflow, zero friction.

Core Sync
• Bi-directional sync between Apple Reminders and Google Calendar (including Google Tasks)
• Auto-discovery of your Reminders lists and matching Google lists
• Automatic list creation on the other side when missing
• Per-list enable/disable toggle
• Auto-enable new lists setting

Conflict Resolution
• Automatic detection when an item changes on both sides since last sync
• Manual resolution: side-by-side comparison with field-level diff highlighting
• Automatic resolution: keeps the more recently modified version

Activity Log
• Full audit trail of every sync action with timestamps
• Field-level change tracking (title, notes, status, due date)
• Auto-cleanup after 60 days (configurable)

Sync Triggers
• Background sync (Background App Refresh)
• Siri Shortcuts: "Sync Tasks" intent for automations

Safety
• Configurable threshold (10–1000): pauses background sync when pending changes exceed limit
• Warning banner in Changes and Settings screens when threshold exceeded
• Notification alert when threshold is exceeded

Privacy
• 100% On-Device Syncing: All data processing happens locally on your device. Your reminders never leave your phone.
• Zero Creepy Tracking: No third-party analytics, no ad trackers, and no data harvesting.

Limitations
• gtsync syncs titles, notes, completion state, and due dates between the native Reminders app and Google Calendar / Google Tasks. The following fields do not sync due to platform differences and limitations:
• Attachments
• Alerts / reminders
• Priority
• Recurrence (repeating tasks)
• Time-specific due dates (reduced to date-only values)