CALarm

Your calendar, as real alarms.

A calendar notification is a banner you swipe away. A meeting deserves an alarm.

How it works · Features · Why · Build it

   

_{Demo calendar data. Captured from the app's screenshot mode.}

The problem

Calendar reminders are notifications. Silent mode mutes them, Focus hides them, and a buried banner is exactly how a meeting gets missed. iOS 26 finally lets third-party apps schedule real alarms through AlarmKit: the same full-screen, ring-through-silent alert as the Clock app. CALarm connects that to your calendar.

How it works

1 · Read the calendar Events come from your iPhone calendars and straight from Google Calendar, with free/busy shares, recurring series and moved meetings kept in step.

2 · Arm what matters Tap the square next to a meeting. Pick one or more lead times: at start, 1, 5, 10, 30 or 60 minutes before, or a day ahead.

3 · It rings AlarmKit rings through Silent and Focus, even with the app closed, with Snooze and Dismiss right on the alert.

The countdown, everywhere

_{Dynamic Island (compact, minimal, expanded) and the Lock Screen card. Illustration drawn from the widget's layout and font.}

Minutes before a meeting, a flight-board countdown appears in the Dynamic Island and on the Lock Screen, then hands off to the alarm. A compact version is built for Apple Watch and CarPlay.

Features

• Real alarms, not banners. Full-screen AlarmKit alerts that break through Silent and Focus.
• Several alarms per meeting. A heads-up at 10 minutes and a final call at start.
• One ring per minute. Back-to-back events at the same time merge into one alarm, titled Standup + 2 more.
• Google Calendar built in. Direct API sync with incremental change detection, alongside EventKit.
• Fails open. When the app is unsure whether an event still exists, it keeps the alarm. A missed meeting is the one outcome it is built to prevent.
• Knows when it missed. An alarm journal compares intended and actual ring times, and a missed alarm is flagged on its event and in Status.
• Vibrate mode and Focus filter. Buzz instead of ring, automatically inside a chosen Focus.
• Flip-board design. Pixel type, split-flap digits, seven accent colours, light and dark.
• Private by design. No account, no server, no analytics. Calendars are read on device.

Why not just a notification?

	Calendar notification	Clock alarm	CALarm
Follows your calendar automatically	✓	–	✓
Rings in Silent mode	–	✓	✓
Breaks through Focus	–	✓	✓
Full-screen alert with Snooze	–	✓	✓
Live countdown in the Dynamic Island	–	–	✓
Several lead times per event	✓	–	✓

Build it

Requires Xcode 26 and an iPhone on iOS 26. The Simulator runs the app but cannot ring an AlarmKit alarm.

git clone https://github.com/parthchandak02/calarm.git
cd calarm
./deploy.sh 1   # Simulator
./deploy.sh 2   # connected iPhone

Google sign-in is off on a fresh clone and the iPhone calendar path works without it. Tests run from the command line; see AGENTS.md.

Project layout

Calarm/                  App: AlarmKit scheduling, EventKit and Google sync, SwiftUI views
CalarmWidgetExtension/   Live Activity and Dynamic Island
CalarmShared/            Types compiled into both targets
CalarmTests/             Unit tests for the scheduling and sync logic
scripts/                 Release pipeline (ship.sh) and asset tools

Documentation

AGENTS.md	How to work in this repo: commands, conventions, known traps
STATUS.md	Where the project stands and what comes next
RESEARCH.md	Verified AlarmKit, EventKit and Google Calendar facts, with sources
CHANGELOG.md	What changed, build by build
SECURITY.md	What must never be committed

_{Built with AlarmKit, ActivityKit, EventKit and SwiftUI.}