Personal and shared calendars
Manage personal and shared events in separate calendars. You can also create recurring events.
DayBayA shared calendar for couples and families
DayBay is a calendar app for iPhone and iPad that lets couples and families share events, daily notes and to-dos. Keep personal and shared calendars separate, with everyday plans and tasks in one app.
Download free on the App StoreRequires iOS 18.0 or later or iPadOS 18.0 or later. Available in Japanese, English and Spanish.
A second interactive demo
Try the two ways to add events
Choose Bulk or Event, set dates and a highlight color, then save to the sample calendar.
Keep everyday tasks alongside your plans
Daily notes
Check a day’s notes alongside the monthly calendar. Keep useful information with the date it belongs to.
Shared to-dos
Share shopping lists, things to pack and other tasks that do not need a calendar event. You can also check completed tasks.
See DayBay in use
These screenshots are published on the App Store. Their events, to-dos and notes are examples.
Start sharing with family or a partner
- Install and sign in. Each person installs DayBay on their iPhone or iPad and signs in with Apple or Google.
- Create a shared calendar and invite someone. Create a calendar, then choose “Invite members” to send the other person an invitation link.
- Open the link and join. The other person checks the calendar name and the person who invited them, then joins to share events, notes and to-dos.
Read the sign-in, invitation and joining guide
See how to share family plans, daily notes and to-dos
Planning a call across time zones? Compare both local dates.
Supported devices, languages and pricing
- Devices
- iPhone and iPad
- Required OS
- iOS 18.0 or later / iPadOS 18.0 or later
- App languages
- Japanese, English and Spanish
- Price
- Free to download
For current compatibility and availability, check DayBay on the App Store.
Questions before you start
Can I import events from Google Calendar or Outlook?
With your permission, you can select events from Google Calendar, Outlook or the Apple calendar on your device and copy them into DayBay once. This does not keep them in sync or write changes back to the original calendar.
Can I keep personal events separate?
Yes. Manage personal and shared calendars separately. Information in a shared calendar is visible to its members.
Does sharing require an account?
Each person signs in with Apple or Google and joins the same shared calendar.
What if an invitation link does not open the app?
Install DayBay and sign in, then open the original invitation link again. If the link cannot be used, ask the person who invited you for a new one.
Where can I get help with the app or my account?
Our support page includes contact details and information about deleting an account.