Your work calendar lives in Microsoft 365, your family plans live in iCloud, and your employer blocks every sync app on the market. CalSync Kit is a self-hosted sync service you deploy to your own Google Cloud project in about 20 minutes: iCloud, Outlook and Google, two-way, every 10 minutes — no PC left on, no subscription, and no handing your passwords to someone else's server.
Your passwords stay yours
Runs in a Google Cloud project only you control. No telemetry, nothing phones home, no credentials stored on anyone else’s servers.
Beats locked-down tenants
The included Power Automate bridge gives full two-way sync with a blocked Microsoft 365 work account — no admin consent, no IT ticket.
~£0/month to run
Sized to fit Google Cloud’s free tiers, so typical personal use costs pennies or nothing. One purchase instead of £60+ every year.
Proper two-way sync
Full details or anonymous “Busy” blocks per rule. Private events stay private, recurring events are handled, and it’s loop-proof by design.
Deploy in ~20 minutes
One script on Windows, macOS or Linux creates a fresh Google Cloud project and stands up the whole service on a 10-minute schedule.
Source code included
Full Python source, deploy scripts, a private dashboard with Google sign-in, and free bug-fix updates.
One price. Yours forever.
CalSync Kit
£29 one-time
Full source code, deploy scripts, the Power Automate bridge guide and free bug-fix updates. 30-day deploy-or-refund guarantee.
Subscription alternatives cost £48–£120 every year, with your credentials on their servers.