IntervalTimer+ vs timer & stopwatch

Simples Interval Timer. Per the specified time, it is notified by vibration and sound and light. You can be notified in your favorite sound When you add a mySound.wav in iTunes

Set multiple timers and stopwatches at the same time. Give each a name and let it run independently. Build routines for focus, workouts, and breaks. Combine named stages with their own durations, repeat rounds, and choose automatic transitions or start each stage yourself. Try the Pomodoro example or a 40-minute workout followed by a 10-minute break, then make it your own. One routine runs at a time on each device, alongside your ordinary timers. Start a Quick Timer with a preset or minutes slider. Personalize all four presets and choose whether completed Quick Timers are removed automatically. Start timers with Siri and Shortcuts, or use configurable controls on supported systems. On iOS and iPadOS 26 or later, grant alarm permission to use AlarmKit alerts with system countdown and Lock Screen controls. Notification alerts remain available on earlier supported systems or when alarm permission is not granted. Automatic routines use notifications for intermediate stage cues. Keep timers, settings, history, and saved routines on your device and sync them with your other devices through iCloud. A routine's running session stays on the device where you started it.