twocal
True two-way calendar sync. Edit either copy.
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twocal keeps Google, Microsoft and iCloud calendars in sync. Mirror mode is true two-way: edit or delete on either side and the original follows. Rules decide what each copy says. A public dashboard shows our reliability. 14-day free trial, no card.
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PH · launched Oct 31, 2026 · 3 upvotes (top 10%)
- Horizontal
- Workflow automation
- B2C
- Not AI
- Commercial product
- Productivity
- SaaS
- Calendar
Similar launches
See all 120 similar launches →Could you build this?
Partial Google and Microsoft calendar APIs are straightforward to integrate, and the UI and rules engine are vibe-codeable. True two-way sync with conflict resolution across iCloud (CalDAV) and multiple providers is much harder to get reliably right.
What it would actually take: Use Google Calendar and Microsoft Graph APIs plus CalDAV for iCloud, with a sync engine that stores per-event mappings and sync tokens. The hard part is conflict resolution, idempotent event mapping, handling recurring events and provider rate limits without data loss. This needs someone experienced in distributed sync and calendar-protocol edge cases, plus long-running testing against real accounts.
Competitors
Other products that read as similar to this one : 120 launches clear the similarity bar, closest 8 shown.
Attention rank: #18 of 121 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 303 days after the earliest competitor.
- Twocal · hn · 2026-08-05 · 5 upvotes · similarity 0.61
- Calnio · ph · 2026-10-04 · 67 upvotes · similarity 0.55
- Hetk · ph · 2026-10-13 · 1 upvotes · similarity 0.53
- SyncMyDay · ph · 2026-10-06 · 2 upvotes · similarity 0.52
- TV - Family Calendar · ph · 2026-09-17 · 4 upvotes · similarity 0.49
- byosynch · ph · 2026-09-13 · 1 upvotes · similarity 0.48
- Kalender Sync · ph · 2026-10-22 · 70 upvotes · similarity 0.47
- RentalCal · ph · 2026-10-06 · 3 upvotes · similarity 0.46
Other launches for this product
- No other launches for this product.