Tap an event. Start.
Choose a countdown for the planned duration or a stopwatch for the actual time spent.
Calendar × Timer
Turn plans
into focus.
Check your day, then start a timer right from the event. caltimer turns the time you plan into time you use.
Reiwa 8
July 2026
Today
10:00–10:45
Design review
▶
Timer running
24:18
One flow. Less friction.
Your schedule and your focus, finally together.
It keeps running.
AlarmKit keeps your alarm reliable, while the Lock Screen and Dynamic Island show time remaining.
Look back with context.
When timing ends, the result can be saved to that day's event automatically.
Focused time
36:42
Project planning
More than one thing?
Run as many as you need.
Countdowns and stopwatches can run side by side. Cooking, laundry, study, breaks—see every active timer together and swipe away the ones you no longer need.
Multiple timersCountdownStopwatch
Made for every day.
Japanese calendar, built in
Japanese eras and 16 national holidays, including substitute holidays, are calculated offline. Browse smoothly from 2000 to 2100.
Your calendar, your choice
Sync with Apple Calendar or keep events local. Calendar permission is always optional.
Quiet by design
Ivory and Mono skins, each in light and dark. Monospaced numbers and subtle haptics keep everything calm and clear.
Ready worldwide
A fully localized interface in Japanese, English, and 32 more languages.
Calendar × Timer
Make today good time.
Your plans and timers, together in one app.
Coming soon on the App StoreiPhone · iOS 26.0+