Both tools are great for syncing calendars across Google, Outlook, and Apple. The best one for you comes down to a few key differences in privacy, pricing, and features. Let's break it down.
Caltsu never stores event titles or descriptions on its servers. We sync availability, not your data. OneCal processes event data through US-based servers.
All Caltsu infrastructure runs in the EU. For European professionals and companies with data residency requirements, this matters.
Your calendars update the moment a change is made. No waiting for the next polling cycle. It's genuinely real-time.
Start with up to 3 calendars for free, forever. Pro is €7/month (billed annually). OneCal has no free plan and starts at ~$8.30/mo when billed annually.
OneCal has been around longer and integrates with more third-party tools and platforms beyond core calendar sync.
OneCal bundles scheduling/booking link features. If you need Calendly-style links alongside sync, OneCal has you covered.
OneCal offers team plans with shared calendars and org-level management. Caltsu is built for individual professionals who need a simple, powerful sync tool that just works.