Date Alarm & Shift Calendar

Worried you’ll forget tomorrow’s shift alarm? Need reliable alerts without loud sounds?

CAlarm is an alarm app for people who don't want to miss a specific day — a shift, a hospital appointment, an anniversary. You set the date and time, and it rings. The built-in iOS alarm only takes a time of day, so it cannot ring on “April 15 at 2:30 PM” alone. CAlarm can, and it shows full-screen even on the lock screen.

Manage everything in one app. Add alarms directly to calendar events, and save templates for one-tap shift & alarm setup.

You can also view upcoming schedules with widgets.

Perfect for • Anyone who forgets to set an alarm the night before • Shift workers who don’t want to miss a work day • Biweekly trash day • Birthdays and anniversaries • Hospital and salon appointments • Concert and event dates • Anyone who misses banner notifications • Anyone who wants an alarm on a specific date

Features • Date-based alarms for specific days • Full-screen alarms that ring in silent mode • Biweekly, monthly, yearly, and “3rd Thursday” repeats (Premium) • Calendar schedule management with alarms • One-tap templates for shifts & alarms • Lock screen widget for your next event (Premium) • Alarm volume control • Repeat alarms by weekday • Snooze support • Advance alarm notifications (push notifications) • Multiple alarm sounds • Customizable theme colors • Font settings • Dark mode support • Long-press to duplicate alarms

CAlarm registers alarms with Apple’s AlarmKit (iOS 26), so they ring at alarm volume even in silent mode, Focus, and Do Not Disturb, and appear full-screen on the lock screen. Works on both iPhone and iPad. Requires iOS 26.0 or later. Core features are free.