Every account. Every protocol.
Google Calendar, Microsoft Graph, Apple iCloud, raw CalDAV. The providers other tools quietly ignore — Fastmail, Titan, Radicale, mailbox.org, Posteo — are all first-class here.
GoogleOutlookAppleFastmailTitanCalDAV
NewCoInside — scheduling that learns your rhythm
The one calendaryou actually chose.
Six accounts in, you stop pretending one of them is the real one. chosencal mirrors them all into one warm place — Google, Outlook, Apple, Fastmail, Titan, any CalDAV. No more double-booking.
(Yes, we're aware of how that sounds. We meant it.)
· DashboardSynced 4 · healthyTotal Events128
Calendars Connected4
Unsynced0
Mon 30Tue 1Wed 2Thu 3Fri 4Sat 5Sun 6
89101112123
Product review9:30 · Google
Investor sync12:00 · Outlook
1:1 · Sarah3:00 · Apple
Design critique11:00 · Fastmail
Deep work9:00 · Fastmail
Board call2:00 · Google
Ship review10:00 · Outlook
Speaks the calendars you actually use
Features
Everything the others won't build.
Multi-provider sync, mutual scheduling, and booking links that respect every calendar you own — not just the one Google knows about.
Reschedule once.
Every busy block updates everywhere — automatically, in seconds.
Links that know.
Booking availability that respects every connected calendar. Not just one.
An AI that learns when you actually take calls.
When both people are on chosencal, CoInside proposes mutually-good times from real meeting history. No public availability wall. No grid of slots. Just better answers.
- Learns from your last 90 days of meetings
- Respects both people's preferred windows
- Penalizes back-to-back stacks for breathing room
- Works across timezones automatically
How it works
Connect once. Stay synced.
Five minutes to set up. No Zapier, no scripts, no servers to run.
i.
Connect every account
Sign in with Google or Microsoft to import in one click. Add CalDAV providers — Fastmail, Titan, Apple, Radicale — with a username and password.
ii.
Pick your Core
One calendar becomes your unified hub. Every event from every other source mirrors here, so there's exactly one place to look.
iii.
Share your link
A booking page that respects every connected calendar, free for both sides. CoInside kicks in when the other person is on chosencal too.
How we compare
Built for the people they ignore.
The incumbents skip CalDAV and skip mutual scheduling. We built the tool for the rest of us.
| chosencal | OneCal | Calendly | Reclaim | |
|---|---|---|---|---|
| Google · Outlook · Apple | — | |||
| Fastmail · Titan · any CalDAV | — | — | — | |
| Real-time mirroring | — | |||
| Mutual scheduling (CoInside) | — | — | — | |
| Auto-learned preferences | — | — | ||
| Booking links | — | |||
| Zero telemetry | — | — | — |
Pricing
Free to start. Simple when you grow.
No artificial limits. No upsell screens. Cancel anytime.
Free
$0
forever · no card needed- 2 connected calendars
- 1 booking link
- 1 Chosen person
- 60-second sync
- Day / week / month views
Most popularSolo
$9/mo
per month- 5 connected calendars
- 3 booking links
- 3 Chosen people
- 20-second sync
- CoInside AI scheduling
- Meeting links & details
Pro
$19/mo
per month- Unlimited calendars
- Unlimited booking links
- Unlimited Chosen people
- Real-time push sync
- Custom booking branding
- Priority support
Frequently asked
Questions, answered.
OneCal focuses on Google, Outlook, and Apple — and it doesn't do CalDAV. chosencal supports every CalDAV provider (Fastmail, Titan, Radicale, mailbox.org…) and adds CoInside, mutual scheduling between chosencal users. It's built for the people OneCal ignores.
Because every other calendar tool looks the same — clean white, sans-serif, blue accents. We wanted chosencal to feel like a place, not an interface. Warm, considered, made by humans. The design is opinionated on purpose.
No — CoInside needs both sides on chosencal so it can intersect real availability and learn from both calendars. If they're not a user, they still get your standard booking page, which respects every one of your connected calendars.
OAuth tokens are encrypted at rest, we read only what's needed for sync, and we run zero telemetry. Your schedule is yours.
Ready when you are
Stop saying “let me check my other calendar.”
Five minutes to set up. Five accounts deep. Free to try, no card needed.