BarbellBeat: Gym Rest Timer
Your heart knows when to lift
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About
There's one question I kept coming back to during my workouts.
Why does everyone rest for the same amount of time?
Some people recover fully in 60 seconds.
For others, their heart rate is still elevated after 90.
Yet most training still runs on a fixed timer.
So I made this.
BarbellBeat uses your Apple Watch to track how your heart rate
recovers between sets, and tells you when you're ready for the next one.
- Real-time heart rate recovery tracking
- Haptic alert the moment you've recovered
- Every workout and rest interval saved automatically
Train by recovery, not by the timer.
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What's New in BarbellBeat
1.4.2
October 10, 2026
iPhone • Each workout now shows its number, and milestone days like your 10th, 25th, 50th, and 100th get a banner in History • The Info tab is reorganized: How to Use, Why Rest by Heart Rate, and Privacy & Health Data • Rest by Body Part is calculated more accurately, and Rest by Set Order is easier to read • Contact us on Instagram Apple Watch • The workout summary shows which workout this is, with a tap on your wrist on milestone days • If the heart rate signal drops for a moment, you'll see "--" instead of a stale number, and recovery is judged once it's back • Walk away without ending your workout? It ends on its own after a while and your record is saved
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