DayBay

Share family plans, notes and to-dos

DayBay is a shared calendar for iPhone and iPad. With your family or partner, use events for plans with a date and time, daily notes for information about a particular day, and to-dos for tasks you want to mark complete.

Download DayBay on the App Store

Requires iOS 18.0 or iPadOS 18.0 or later. Each person signs in with Apple or Google.

Try adding events on the home page
DayBay’s monthly calendar showing two people’s plans together. Sample content.
The monthly calendar. The content shown is an example.

What goes where in everyday life?

Here are a few examples to help you decide how to organize information with your family or partner.

A weekday pickup

Event
A pickup at 6:00 p.m., or another plan with a set time.
Note
Who is picking up and what they need to bring that day.
To-do
Prepare a form or buy milk on the way home.

Shopping as a couple

Event
A shopping trip at 10:00 a.m. on Saturday.
Note
The meal you plan to cook that day or the stores to visit.
To-do
Rice, detergent and other items to check off as you buy them.

A family visit

Event
Your arrival date and time, and when to meet your family.
Note
The day’s meeting place or messages to share.
To-do
Prepare a gift or the things you need to pack.

To-dos are a task list for each calendar. Use a daily note for information you want to keep with a particular date.

Planning a call across time zones

For a long-distance couple, “Saturday at eight” can mean two different moments. Agree on a full date, a time and a city for each person before putting the call in your shared calendar.

  1. Confirm both local dates. A call on one person’s Saturday evening may fall on the other person’s Sunday morning. Include the year and city, rather than a time-zone abbreviation alone.
  2. Check the calendar’s display time zone. DayBay can follow your device’s time zone or display a region you select. Save the call as a timed event, then check its date and time on each person’s device before treating it as confirmed.
  3. Recheck when the date changes. Daylight-saving changes can alter the difference between your cities. Update the same event and confirm the new local date and time with your partner.
One call, two local dates — a fictional example
New York
Tokyo

These are the same moment for these dates. Check the offset for the date you actually plan to call; do not reuse a fixed hour difference throughout the year.

A confirmation you can copy: “Our call is November 7 at 8:00 p.m. in New York, which is November 8 at 10:00 a.m. in Tokyo. Do both calendars show that?”

Use a timed event for the call. An all-day event or a daily note keeps a calendar date, so it is not a substitute for confirming both local call times. You choose and confirm the time together.

Separate information about a day from tasks to finish

Daily notes

Keep information tied to a date in that day’s note. You can see it alongside the monthly calendar, keeping meeting places and messages separate from the time of an event.

DayBay’s monthly calendar and the selected day’s note in the same view. Sample content.
A note keeps information with a particular date.

Shared to-dos and completion history

Use to-dos for shopping and preparations you want to mark complete. Check off finished tasks and review their completion history, separately from scheduled events.

A shared DayBay to-do list for shopping and other tasks, with completion controls. Sample content.
To-dos are shared with the calendar’s members.

The events, notes and to-dos shown are samples. You can also try adding events in the home page demo.

Keep personal and shared information separate

  1. Each person installs DayBay on their iPhone or iPad and signs in with Apple or Google.
  2. Create a shared calendar and invite the other person with an invitation link. Check the calendar name and who sent the invitation before joining.
  3. Put plans, daily notes and to-dos you want to share in the shared calendar. Keep information you want to manage on your own in a personal calendar.

Information added to a shared calendar is visible to its members. See the steps for creating a calendar, inviting someone and joining and what is shared.

Check before you get started

Devices
iPhone and iPad, with iOS 18.0 or iPadOS 18.0 or later. Check each person’s device before sharing.
Languages and price
Japanese, English and Spanish are supported. The app is free to download. Check DayBay on the App Store for current availability.
External calendars
With your permission, you can select events to copy once from Google Calendar, Outlook or the Apple calendar on your device. DayBay does not keep them in sync or write changes back to the original calendar. Read about calendar imports.
Download DayBay on the App Store