Onin
Plan events without leaving the chat
Onin launched on August 16, 2021 with 159 votes, #216 of 2,953 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 5 years on.
What it does
One place to find time & plan events without leaving the chat. Join our Early Access Program to use Onin first.
The chat-first, End-to-End Encrypted shared calendar for iPhone, iPad, Mac, and Android. 100,000+ families, couples, and groups keep every plan, change, and decision with the event it belongs to. Try free.
Every event has its own thread. Share photos, files, and notes without leaving the event. React, reply, and quote just like a messenger, but everything stays in context instead of scattered across WhatsApp, iMessage, and email. Every change posts a before-and-after update automatically, and reminders reach everyone who needs them. No more “wait, did you move that?” buried in a group chat. Every member gets a colour. See your kids’ activities, your partner’s shifts, and your own schedule in a single view, then pinch to zoom between overview and detail. Google, Apple, and Outlook in one place, plus subscribed calendars like sports fixtures and school term dates. See personal and shared side…from ourcal.com
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