gtsync

Bi-directional sync between the native Reminders app and Google Tasks (including tasks in Google Calendar)

Auto-discovery of Reminders lists and Google Tasks lists

Automatic list creation on the other platform when missing

Per-list enable/disable toggle

Auto-enable new lists setting

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

Full audit trail of every sync action with timestamps

Field-level change tracking (title, notes, status, due date)

Auto-cleanup after 60 days (configurable)

Manual: "Sync Now" button in app and macOS menu bar

Background sync (macOS): periodic timer (5/15/30/60 min intervals)

Background sync (iOS): Background App Refresh

Siri Shortcuts: "Sync Tasks" intent for automations

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

100% On-Device Syncing: All data processing happens locally on your device. Your tasks never leave your phone.

Zero Creepy Tracking: No third-party analytics, no ad trackers, and no data harvesting.