Short answer: OneCal is a solid, well-known calendar-sync tool. People look for an alternative mainly for simpler pricing, a native Apple/iPhone feed, and a stronger privacy stance. LeapSync does real-time two-way sync between Google Calendar and Microsoft 365 / Outlook, adds a private read-only Apple/ICS feed, never stores your event titles or attendees, and starts at $4/month. If you mainly need reliable Google ↔ Outlook sync without per-seat overhead, it's worth a look.
What OneCal does well
Credit where it's due: OneCal handles multi-calendar sync in a single configuration, has a clean setup flow, and offers meeting-scheduling and booking-link features on top of sync. If you want an all-in-one scheduling suite, that breadth is a genuine strength.
Where LeapSync is different
LeapSync
OneCal
Two-way Google ↔ Outlook sync
Yes
Yes
Real-time (push-based)
Under ~5s
Fast, batch-based
Private Apple / iPhone feed
Yes (read-only ICS + QR)
Mobile web view
Stores your event titles / attendees?
No — IDs only
Check their policy
Pricing model
Flat from $4/mo
Per-user, ~$5–10/user/mo
Setup
~2 min, no install
~2 min, no install
OneCal pricing and features per onecal.io as of 2 June 2026; confirm current details on their site.
Privacy: the biggest practical difference
LeapSync is designed so your calendar content never lives in our database. We store the IDs and timestamps needed to keep two events matched — not the meeting titles, descriptions, or attendee lists. Tokens are encrypted with AES-256-GCM. If you handle sensitive client meetings, that minimised footprint matters.
Who should pick which
Choose LeapSync if you want focused, real-time two-way Google ↔ Outlook sync, a private iPhone feed, flat pricing, and minimal data retention.
Choose OneCal if you want a broader scheduling/booking suite bundled with sync and don't mind per-seat pricing.
Try LeapSync free and see if it's the OneCal alternative you wanted.
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Frequently asked questions
Is LeapSync cheaper than OneCal?
LeapSync starts at $4/month with flat pricing, while OneCal is priced per user (roughly $5–10/user/month as of 2026). For 1–2 calendars LeapSync is typically cheaper; check both vendors for current pricing.
Does LeapSync sync to my iPhone like OneCal?
LeapSync publishes a private read-only Apple/ICS feed you subscribe to in Apple Calendar via a QR code. OneCal offers a mobile-friendly web view rather than a native feed; approaches differ, so pick what fits your workflow.
Can I migrate from OneCal to LeapSync easily?
Yes. Disconnect OneCal, sign up for LeapSync, connect the same Google and Microsoft accounts, and choose your sync direction. Setup takes about two minutes.