Last updated: November 12, 2026
calsync mirror ("the app") is a private, personal-use application operated by a single person (the "owner") for the owner's own calendars. It has no other users.
https://www.googleapis.com/auth/calendar.app.created. This lets it create secondary calendars and
create, read, update and delete events only on calendars it created itself. It cannot see or change the
owner's primary calendar or any other calendar.The app's only purpose is to copy the owner's own calendar entries into the calendars it created in the owner's Google account. It reads back the events on those calendars only to detect and correct changes made to the copies.
Only limited details are copied: event title, start and end time, time zone, all-day status, busy/free status, and location (with web links, phone numbers and meeting codes removed). Birthdays are copied as the person's name and the month and day only. Attendees, notes and descriptions, video-meeting links, attachments, alerts, and contact details such as phone numbers, email addresses and addresses are not copied.
The app runs on a private server controlled by the owner. Its credentials and its synchronization records are stored there with access restricted to the app, and are transmitted only over encrypted (HTTPS) connections to Apple and Google. The calendars created in Google are private to the owner's account and are not shared or made public.
The app does not sell, rent, share or transfer any data to anyone. It does not use data for advertising and does not use it to develop, improve or train artificial intelligence or machine-learning models. The owner may separately choose to let their own assistant services read their Google Calendar through those services' own Google integrations; that access is granted directly by the owner and is not performed by this app.
calsync mirror's use and transfer of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements.
Synchronization records are kept only while the app is in use; daily backups of them are kept for seven days. The owner can stop the app at any time, revoke its Google access at myaccount.google.com/permissions, revoke its iCloud access by deleting its app-specific password, and remove all copied data by deleting the calendars the app created.
Changes to this policy will be published on this page with a new "Last updated" date. Contact: mrkane7@outlook.com