CalChime for iPhone

Calendar alerts are easy to miss. Make your calendar ring.

Your calendar tells you about the dentist appointment or the 9:00 meeting with a quiet banner. Look away for a moment and you have missed it.

CalChime is an iPhone app that reads your Google Calendar, or the calendars already on your iPhone, and sets real iPhone alarms for the timed events in the calendars you choose.

Coming soon to the App Store In testing now. Requires iOS 26.1 or later.

Privacy Policy Terms of Use Support

CalChime app icon: a calendar with a bell on a purple tile

CalChime

Your calendar events. iPhone alarms.

The reminder was there. You just did not notice it.

You put the appointment in your calendar. Your calendar did its job and showed a banner ten minutes before. You were making coffee. Nothing was broken, and you were still late.

A calendar notification

  • A quiet banner
  • Easy to miss when you are busy with something else

A CalChime alarm

  • A real iPhone alarm with the event’s title on it
  • Set for the time you choose: the event’s start, or 5 to 30 minutes before. CalChime Pro adds 1 hour and 2 hours before

How it works

  1. 01

    Choose where your calendar comes from

    Pick one source. You can switch later in Settings. Either way, CalChime does not change your calendar.

    • Google Calendar Sign in with Google. CalChime asks Google for read-only access.
    • The calendars on your iPhone Tap “Use the calendars on this iPhone” and allow Full Access when iOS asks. It is the only permission iOS offers for reading events. CalChime only reads them.

  2. 02

    Choose calendars and timing

    Pick which calendars get alarms and when they ring: at the event’s start, or 5, 10, 15 or 30 minutes before; 1 hour or 2 hours before with CalChime Pro.

  3. 03

    Open the app to update

    CalChime sets an iPhone alarm for your upcoming timed events. When your calendar changes, open the app and it brings the alarms up to date.

Good to know

Timed events only
All-day events and events you declined are skipped.
Alarms update when you open the app
If your calendar changes, open CalChime. Your iPhone may also let it check in the background now and then; that is not guaranteed. With the calendars on your iPhone, CalChime sees a change only after iOS has synced it from your calendar account.
Alarms that are set stay set
Your iPhone holds them. They ring even when CalChime is closed.
One calendar source at a time
Google Calendar directly, or the calendars on your iPhone, never both. If you switch, CalChime keeps the alarms it has already set until you choose calendars from the new source, and tells you how many it will replace before you save.

Why CalChime asks for Google Calendar access

CalChime cannot set an alarm for an event it cannot see. So if you connect Google Calendar, it asks Google for read-only access to three things, and uses them only to show your upcoming events and set alarms on your iPhone.

  • Your list of calendars

    So you can choose which calendars get alarms.

    Google permission https://www.googleapis.com/auth/calendar.calendarlist.readonly

  • The events on your calendars

    So CalChime knows when to set an alarm and what title to show on it.

    Google permission https://www.googleapis.com/auth/calendar.events.readonly

  • Basic Google sign-in

    Your Google account ID and email address, so you stay signed in and Settings can show which account is connected.

You can stop at any time. In the app, go to Settings and tap Sign out of Google or Remove CalChime alarms. You can also remove CalChime’s access from your Google account at myaccount.google.com/permissions.

CalChime’s use and transfer to any other app of information received from Google APIs will adhere to the Google API Services User Data Policy, including the Limited Use requirements. The full detail is in the CalChime Privacy Policy.

Why CalChime asks for Full Access to your iPhone’s calendars

If you choose the calendars already on your iPhone, iOS asks you to allow Full Access. iOS has no read-only calendar permission, so Full Access is the only way an app can read your events. It would also let an app change them. CalChime does not. It only reads, and uses only these two things:

  • Your list of calendars

    Their names, and the name of the account each one belongs to, so you can choose which calendars get alarms.

  • The events in the calendars you choose

    Each event’s title, start time and time zone, and whether it is all-day, cancelled or declined. Not its location, notes or other guests.

  • What iOS shows you

    “CalChime reads the calendars on this iPhone to set alarms for your events. iOS calls this permission Full Access; CalChime only reads your calendars and never changes them.”

    iOS permission Full Access to calendars

Nothing from your iPhone’s calendars leaves your phone. CalChime does not sign in to your calendar accounts or contact any calendar service. iOS does the syncing, so CalChime is only as current as that sync.

Which calendars are on your iPhone

CalChime sees the calendars iOS keeps on your phone: those from the accounts added in Settings › Apps › Calendar › Calendar Accounts, and calendars you subscribe to. Which ones CalChime can show depends on those accounts and on each account’s own sync settings.

  • Google accounts added to your iPhone. Google says these bring only the calendars under “My calendars”, plus Birthdays, unless you choose more. To include other or shared Google calendars, tick them at google.com/calendar/syncselect. Or connect Google Calendar directly instead.
  • Outlook. Calendars that live only in the Outlook app aren’t included unless the account is also added in iPhone Settings. To include an Exchange or Outlook.com calendar, add the account in Settings › Apps › Calendar › Calendar Accounts. Microsoft says some organizations do not allow that for work accounts, and that shared Microsoft 365 calendars reach the iPhone only with its newer way of sharing calendars.
  • Not tested yet: we have not tested CalChime with Microsoft Exchange or Outlook.com accounts, so we do not claim that they work.

You can stop at any time. In the app, go to Settings and tap Stop using iPhone calendars or Remove CalChime alarms. You can also turn off CalChime’s access in your iPhone’s Settings › Privacy & Security › Calendars.

Either way, your calendar stays yours

It only reads

CalChime does not create, change or delete anything in your calendar. With Google Calendar it cannot, because Google’s permission is read-only. With the calendars on your iPhone, iOS grants Full Access, and CalChime still only reads.

It stays on your iPhone

There is no CalChime server and no account with us. Event titles, start times and calendar names are stored only on your phone, and passed to Apple’s alarm system on the phone so the alarm can show the event’s title. Nothing from your calendar is sent to Confidere.

No tracking

No advertising and no tracking. Your calendar data is not sold, not shared, and not used to train AI. The two pieces of other companies’ software in the app, Google’s sign-in and RevenueCat for purchases, are described in the Privacy Policy.

Coming soon to the App Store

CalChime is in testing and is not on the App Store yet. It will need an iPhone running iOS 26.1 or later.

Support

A question, a problem, or an alarm that did not do what you expected? Email us and we will help.

ben@confidere.biz

Privacy Policy

What CalChime reads from Google Calendar or your iPhone’s calendars, what it does with it, and how to remove it.

Read the Privacy Policy

Terms of Use

The terms for using the app, including why it should not be your only reminder for things that really matter.

Read the Terms of Use

CalChime is made by Confidere. Google Calendar is a trademark of Google LLC. iPhone and App Store are trademarks of Apple Inc.