Simple Calendar Sync

Simple app to sync and combine your calendars locally on your device without sending your data to external servers or tracking software.

Merge events from Google Calendar, Outlook or any calendar account on your device into a single calendar: block time across accounts, avoid double bookings and keep your real availability up to date everywhere. All the synchronization happens 100% on your device.

Functionalities:
- Sync events between the calendar accounts already on your device (Google, Outlook, Exchange and more).
- Sync Center: pick multiple source calendars and one target calendar.
- Choose which properties to copy: title, description, location, time and recurrence.
- Sync range from 7 up to 30 days into the future.
- Custom title prefix for synced events (e.g. [SYNC]).
- Visibility override: keep source, default, private or public.
- Availability override: keep source, busy or free.
- Automatic background sync: set it once and stay updated forever.*
- Manage your active syncs: pause, resume or delete them at any time (optionally removing the events they created).
- Sync Now: trigger a manual sync with one tap.
- Browse your accounts, calendars and events without leaving the app.
- Simple Material 3 UI with light and dark theme.
- Optimized for phones, tablets and big screens (dual-pane view).
- Available in English and Spanish.
- YOUR CALENDAR DATA NEVER LEAVES YOUR DEVICE

Usage:
- When you keep separate work and personal calendars and want your real availability visible in both.
- When you want to avoid double bookings between Google Calendar and Outlook.
- When you need one unified schedule without handing your calendars to a third-party service.

Privacy:
The INTERNET permission is used only to validate your subscription with Google Play. We do not send or collect any data on external services or servers: the sync runs locally through the Android calendar system, and your existing providers (Google, Outlook…) keep syncing your calendars with their servers as usual.

Tested on Android from 9 to 17 devices. If you have an issue please contact me at support@rperez.me.

* Activating syncs requires the Simple Calendar Sync Pro subscription. Start with a 7-day free trial!

Recent changes:
New in 1.8.0
• Sync moves back to source: an optional setting for each sync. Move a copied event and its original moves too, keeping its length. Only the date and time sync back; if both change, the source wins.
• New animated launch screen.
• Full-screen layout: lists scroll behind the system bars, and the keyboard no longer covers text fields.
• Faster, smoother scrolling.
• Better handling of time zones, daylight saving and events synced from Google.