Yoyatta
Log in

Your calendar, on autopilot.

Yoyatta is an iOS-first scheduling app for hosts with conversational setup, powerful booking rules, and automatic meeting links. Guests book on a fast, protected web page—no Apple device required.

See the flow

Coming soon on the App Store.

Bookers can sign in with
  • Apple
  • Google
  • GitHub
  • Slack
  • LINE
  • Yahoo Japan
Auto calendar setup
Booking page top

Host on iOS. Guests book anywhere.

Frictionless for bookers

Rules & protection

Security by design

No host account to hack. Each calendar signs its own requests using an Ed25519 key pair stored in the iOS Keychain. Sensitive actions use Apple Device Attest & Assert. Credentials are encrypted end‑to‑end.

Per‑calendar keys

Signed headers prove intent per calendar—no shared bearer tokens.

Attestation

Device‑bound verification protects host operations.

Abuse protection

Captcha, passcodes for view/cancel links, and rate limits.