Clockwise was a great tool for keeping your Google and Outlook calendars in sync with intelligent busy blocking. It shut down in March 2026. If you relied on Clockwise to prevent double-booking and protect focus time, TwoCals is a simple, affordable replacement that covers the core features you loved.
We're not here to trash Clockwise. It was a solid product that solved real problems.
Events on your Google calendar automatically appeared as busy blocks on Outlook (and vice versa) in real-time, eliminating double-booking.
Clockwise understood work events and synced them as busy blocks, respecting your calendar boundaries across providers.
You could block off focus time on one calendar and Clockwise ensured it showed as unavailable everywhere, protecting deep work.
We cover the core features you relied on — without the complexity or the price tag.
Same core feature as Clockwise. Events on one calendar automatically block time on the others. Real-time, reliable, no friction.
Connect your work calendar (Outlook, Exchange, Microsoft 365) with your personal calendar (Google) and sync them instantly.
Your calendars stay in sync in real-time using push notifications. No delays, no polling. Just instant updates.
TwoCals does one thing well: sync your calendars. No AI scheduling, no meeting optimization algorithms. Just reliable calendar blocking.
Start free with 2 calendars. Upgrade to Pro for $4/month (or $36/year) for unlimited calendars. Clockwise was often $15+/month.
The free plan isn't a crippled trial. You get 2 calendars, real-time sync, and all the core blocking features forever at no cost.
Unlike most tools, there's no data to migrate. You didn't export calendar data from Clockwise — it worked in real-time. TwoCals works the same way.
Log in with Google or Microsoft. Takes 30 seconds.
Select which calendars should sync and block each other. Done.
From that moment on, your calendars are in sync. No setup wizards, no data imports. Just real-time blocking.
The core features you relied on are all here. Simpler, cheaper.
| Feature | TwoCals | Clockwise (Shutdown) |
|---|---|---|
| Real-time calendar sync | ✓ | ✓ |
| Busy blocking across calendars | ✓ | ✓ |
| Google Calendar support | ✓ | ✓ |
| Microsoft Outlook support | ✓ | ✓ |
| Focus time blocking | ✓ | ✓ |
| Free tier | ✓ | — |
| AI scheduling assistant | — | ✓ |
| Meeting optimization | — | ✓ |
| Pricing (monthly) | Free or $4/mo | $15+/mo |
Get your calendars syncing in under two minutes. Start free, upgrade anytime.
No credit card required. Free tier includes 2 calendars and real-time sync.
Clockwise was acquired by Slack in 2021. In March 2026, Slack decided to discontinue the product and focus on core messaging and workflow tools. Users were given notice to migrate before the March 31, 2026 shutdown date.
Clockwise didn't store calendar events themselves — it synced them in real-time between your providers. There's no export needed. Just sign up for TwoCals, authorize your same calendars, and pick up where you left off.
TwoCals covers the core feature: real-time calendar sync with busy blocking. We don't have Clockwise's AI scheduling assistant or meeting optimization engine — those were nice-to-haves. We focus on the essential feature that keeps you from double-booking, and we do it simpler and cheaper.
If you relied on Clockwise's meeting optimizer, you might also look at Reclaim.ai or Fantastical. But for pure calendar sync with focus time protection, TwoCals is more straightforward and affordable.
TwoCals uses push notifications from Google and Microsoft to sync calendar changes in real-time. From the moment you create an event, it appears as a busy block on other calendars in seconds — same speed as Clockwise.
TwoCals works anywhere you can sign in with Google or Microsoft. We support all standard Google Workspace accounts and Microsoft 365 tenants globally.