Google Calendar in InstaCal, in short
- Signing in
- Through your browser, the standard OAuth flow. InstaCal never sees your Google password.
- Where the token lives
- In your macOS Keychain — not in a preferences file, and not on any server of ours.
- Sync
- Incremental: only what changed moves. Your calendars keep a local mirror of about six years of events and sync only what changed, so any month — 2024 or 2029 — paints the moment you arrive, online or off.
- Emailing guests
- Before a change touches an event's guests, InstaCal asks whether to email them — the same Send / Don't Send choice Google Calendar offers — for edits, reschedules, moves, deletes and new invitations.
- Google Meet
- Meet links are detected automatically and turned into a Join button that remains available until the call ends.
- Multiple accounts
- Add more than one Google account, plus Apple and Microsoft 365 alongside them.
- Duplicates
- The same meeting synced from two accounts is collapsed into one row instead of appearing twice.
Google, Apple and Microsoft in one panel.
Most people's calendars are not all in one place. The panel does not care.
Mixed accounts, one agenda
Work Google, personal iCloud and a Microsoft 365 account interleave into a single day, sorted by time.
Calendar Sets across providers
A set can span accounts — "Work" might mean one Google calendar and one Microsoft calendar, and nothing else.
One meeting, one row
When the same meeting arrives through two accounts, InstaCal collapses it rather than showing you a duplicate.
Colours you control
Override any calendar's colour locally — including calendars whose colour an administrator controls.
The guest question, asked the same way
Change the time of a meeting with people on it and InstaCal asks whether to email them — the same Send / Don't Send choice you get on the web, on edits, reschedules, moves, deletes and new invitations.
Shared calendars appear under both accounts
A calendar two of your Google accounts can see — a family calendar, a holiday feed — shows up under both, with the account that can actually write to it owning your edits.
Common questions
How does InstaCal connect to Google Calendar?
Can I add more than one Google account?
Does it work offline?
Will my guests be emailed when I change something?
Will Google Meet links work automatically?
Does InstaCal collect any data?
How much does InstaCal cost?
Your Google Calendar, without the browser tab.
One keystroke to the whole schedule, one click into the call.
$29.99 $19.99 once. One purchase includes InstaCal for Mac, iPhone, iPad and Apple Watch. No subscription, InstaCal account or ads.
More from InstaCal
Outlook calendar in the menu bar
Microsoft 365 events in the macOS menu bar, with Teams links turned into one-click Join buttons.
Mac menu bar calendar
Month view, long-range agenda, reminders and invitations in one panel that opens with a keystroke.
Next meeting in the menu bar
Your next event and a live countdown where you already look, with a one-click Join.