Rest Timer on Apple Watch Without a Watch App
Short answer
You don't need a watch app to get a rest timer on Apple Watch. Since iOS 18 and watchOS 11, a timer's Live Activity on your iPhone appears in the watch's Smart Stack on its own, so you can see your rest on your wrist. Alerts reach the watch too: when your iPhone is locked and the watch is on your wrist and unlocked, the timer's notifications buzz your wrist. Pick an iPhone rest timer that uses a Live Activity and sends an alert before and at the end of each rest, and your watch becomes a rest timer.
Why a rest timer on your wrist helps
Between sets, your phone is the thing most likely to steal your rest. You pick it up to check the timer, see a message, and two minutes becomes five. A timer on your wrist means you can see how much rest is left with a glance, and feel when it's time for your next set, while the phone stays on the bench.
Two parts: seeing your rest and feeling the end of it
A good wrist timer does two separate jobs, and they work in different ways.
Seeing your rest comes from a Live Activity. That's the live card an app pins to your iPhone Lock Screen while something is under way. In Apple's words from WWDC24, "in iOS 18 and watchOS 11, your iOS Live Activity will appear in the Smart Stack on Apple Watch automatically", and Live Activities "work on Apple Watch even if you don't have a Watch App."
Feeling the end of your rest comes from a notification. Apple's notification guide explains that the iPhone forwards notifications to the watch, and that this happens when the iPhone is locked (or the screen is asleep) and the Apple Watch is on the user's wrist and unlocked. So a rest timer that schedules an alert for the end of your rest can buzz your wrist, as long as your phone is locked.
You want both: a card only helps when you look, and a buzz alone doesn't say how long is left.
How the Smart Stack shows your rest
On the watch, the Live Activity lives in the Smart Stack. A few things make it work well at the gym:
- It opens on its own. Apple's design session says that when a Live Activity starts, the Smart Stack is automatically presented with a card for it.
- It stays when you lower your arm. From the same session: in watchOS 11, the Smart Stack "will remain visible when you put your wrist down", so the time and your rest are both there when you glance down between sets.
- It can have a button. Apple's design advice is to stick to just one control, and it names a timer as a good fit. For lifting, the useful button is the one that starts your next rest.
- Tapping the card offers the iPhone app. With no watch app installed, Apple says tapping the card shows a full-screen view with an option to open the app on iPhone.
What to look for in an iPhone rest timer for the watch
- A Live Activity. No Live Activity, nothing in the Smart Stack. If the card never shows up on your iPhone Lock Screen, it won't show on your watch either. Start with how to put a rest timer on your iPhone Lock Screen.
- An alert before the rest ends, not only at zero. A heads-up a few seconds out lets you chalk up, set your grip and be ready when the rest ends.
- A button to start the next rest from your wrist. Otherwise you still reach for the phone after every set.
- Notifications turned on. A timer that can't send notifications can't buzz the watch. If your wrist stays quiet, check that notifications are allowed for the app on your iPhone.
- Something useful when the rest runs out. A card frozen at 0:00 doesn't tell you how long ago your rest ended.
Watch app or no watch app?
A watch app built to run on its own can keep timing with your phone in a locker. The trade-off is another app to open on a small screen.
With an iPhone timer, your phone does the timing and the watch shows it and buzzes. The phone has to be nearby, in a pocket or on the bench.
How Between works on Apple Watch
Between is an iPhone rest timer for lifting built on this setup, with no watch app to install.
- Your rest in the Smart Stack. Tap Log set and your rest timer begins. The card on your wrist shows the time left and how many sets you've logged.
- Log set from your wrist. The card has one button, Log set. Tap it and your next rest starts on your phone. Reset stays in the app, away from a stray tap.
- A buzz before and at the end. Set Between's alerts to haptics only, lock your phone, and your watch buzzes with "10 seconds, get ready for set 7" and again with "You're up" when your rest is over.
- Work mode after zero. If you haven't logged your next set when the rest runs out, the clock counts the set up from 0:00, captioned "Work", so you know how long it's been.
- Intervals too. With haptics only, your wrist also buzzes at every switch between work and rest during an interval run.
If your wrist stays quiet, Between's Settings has a Turn on notifications link that takes you to the right place. For the full phone-down routine, with the Lock Screen, chimes over music and Siri, see how to time rest without looking at your phone. Not sure how long each rest should be? See how long to rest between sets.
Frequently asked questions
Can I get a rest timer on Apple Watch without a watch app?
Yes. Since iOS 18 and watchOS 11, an iPhone app's Live Activity appears in the Apple Watch Smart Stack automatically, with no watch app. An iPhone rest timer that uses a Live Activity shows your rest on your wrist.
Why doesn't my Apple Watch buzz when my rest is over?
iPhone notifications reach the watch only when the iPhone is locked or asleep and the watch is on your wrist and unlocked. If your phone is unlocked, the alert shows on the phone instead. Also check that notifications are allowed for the timer app, and see what to do when your rest timer doesn't go off with the phone locked.
Can I start my next rest from my Apple Watch?
Only if your timer's Live Activity has a button for it. In Between, tap Log set on the Smart Stack card and your next rest begins on your phone.
Does my iPhone need to be with me?
Yes, for an iPhone timer shown on the watch. The phone runs the timer and the watch shows it and buzzes, so keep the phone in your pocket or on the bench.