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Calnio
Two-way sync between Notion and Apple Calendar
Calnio syncs Notion tasks and Apple Calendar both ways, real iCloud events with alerts, not a read-only webcal feed. Edit in either app, the other updates. Free, built by an indie dev and hosted on a Raspberry Pi at home.
Top comment
Hey Product Hunt 👋 I'm Myroslav. I live in Notion, but my day actually happens in Apple Calendar. Every tool I tried just gave me a read-only webcal feed that refreshes whenever it feels like it, and you can't touch anything from the calendar side. So I built Calnio. It writes real events straight into iCloud and syncs both ways: move an event in Calendar and the due date moves in Notion, rename it and the page gets renamed, create one and a new page appears. It's just me building it, it runs on a Raspberry Pi at my place, and it's free. I'm not here for the badge, I genuinely want feedback: – What breaks? – Anything confusing in setup? – What should come next: Reminders support, Google Calendar, or something else? I'll be here all day answering everything 🙌
About Calnio on Product Hunt
“Two-way sync between Notion and Apple Calendar”
Calnio launched on Product Hunt on October 4th, 2026 and earned 66 upvotes and 1 comments, placing #21 on the daily leaderboard. Calnio syncs Notion tasks and Apple Calendar both ways, real iCloud events with alerts, not a read-only webcal feed. Edit in either app, the other updates. Free, built by an indie dev and hosted on a Raspberry Pi at home.
On the analytics side, Calnio competes within Calendar, Apple and Notion — topics that collectively have 50k followers on Product Hunt. The dashboard above tracks how Calnio performed against the three products that launched closest to it on the same day.
Who hunted Calnio?
Calnio was hunted by Myroslav Repin. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Calnio including community comment highlights and product details, visit the product overview.