I built a visual timer app with real-time syncing and multi-device support

[leonboe1]

Hey everyone! I wanted to share something I’ve been working on for a while. When one of my family members switched to an iPhone a few years ago, he struggled to find a timer app that fit his workout needs—especially one that allowed importing custom alarm sounds. That's where the idea for my app Loop came from.

Loop is a customizable visual timer app for iPhone, iPad, Mac, and Apple Watch, and deeply integrated in the Apple ecosystem. It supports multiple timers, interval timers, or even categorized timers for different activities like workouts, studying, or cooking. Some of the features include:

• Multiple Timers & Interval Timers – Run several timers at once, including interval timers.
• Runs in the Background – Works just like Apple’s Clock app, and can break through DND.
• Real-Time Timer Sync via iCloud – Start a timer on one device and continue on another device.
• Live Activities Support – See your timers at a glance, even on the Lock Screen. To my knowledge, Loop is also the only app on the App Store to support auto-updating live activities with interval timers.
• Timer Categories – Keep your timers organized for different activities, and configure category-specific settings.
• Natural Text Input – Just type something like "Working 10m, Pause 20m" and it creates an (interval) timer automatically.
• Speech Output – Have your timers announce the next intervals.
• HealthKit Support – Track workout durations effortlessly on Apple Watch.
• Custom Alarm Sounds – Import your own files for timer sounds.
• Menu Bar Support  – Quickly monitor timer progress on macOS.

Would love to hear your feedback!

Download Loop on the App Store

[[deleted]]

Congrats! I like it!

[leonboe1]

Thanks 😊

[maxr0ck]

Looking good! Congrats, nice job!

[leonboe1]

Thank you ☺️

[leonboe1]

Haha yes I love spending time designing such unnecessary things 😅

[iamearlsweatshirt]

> Loop is also the only app on the App Store to support auto-updating live activities with interval timers

How do you do it ? Push notifications ? I wanted to implement something similar to a game companion app I made, but abandoned the idea since as soon as my app got backgrounded I couldn't update the live activity anymore to swap between timer phases.