Weight lifting app for Apple Watch: track sets and reps

Practical Playbook

1. 1

   Pick an app that auto-adjusts weight

   Most apps just log what you enter. You want one that calculates next session's load based on your last rep performance. If you hit 8 reps on bench, next week it should add 2.5 kg automatically. Saves thinking and removes guesswork.

2. 2

   Set your rep range before you lift

   Decide on rep targets per exercise before stepping under the bar. For hypertrophy, 8-12 is solid for most lifts. For strength, 3-6. Having a clear goal per exercise means you adjust weight up or down based on that target, not how you feel that day.

3. 3

   How often should you deload?

   After 4-6 weeks of accumulating volume, your nervous system needs a reset. Deload week means dropping weight by 40-50% but keeping reps same. Don't skip it. I've seen lifters plateau for months because they refuse to back off. One light week lets you come back stronger.

4. 4

   Track your reps with your watch

   A smartwatch can count reps automatically for compound lifts like squat and bench. Dorsi lets you log sets from your wrist, no phone needed. That matters when you're mid-workout and your hands are chalky. You get a clean log without breaking flow.

Common Mistakes

• Mistake

  Using the app as a logbook and nothing else.

  Why

  You punch in sets and reps but never act on the data it's collecting. That's like owning a smart scale that just shows you the number every day without ever looking at the trend.

  Fix

  Review your app's progress charts once a week. If bench press reps have been flat for 3 sessions, drop the weight 10% or switch to a dumbbell variant for 4 weeks.

• Mistake

  Giving up on an exercise the moment it feels awkward just because the app recommended it.

  Why

  New movements always feel weird for the first 2-3 sessions. Quitting too early means you miss the stimulus your body actually needs to grow.

  Fix

  Give any new exercise a 10-rep minimum at an easy weight before deciding it's a bust. If it still feels wrong after 3 full sessions, swap it out.

• Mistake

  Winging your rest times because you're scrolling on your phone between sets.

  Why

  Rest length directly controls how much you can lift next set. Too short and reps tank; too long and you lose the pump and waste time.

  Fix

  Set the app's rest timer and obey it. 60-90 seconds for hypertrophy, 3+ minutes for heavy strength work. No exceptions.

• Mistake

  Taking the app's RPE prescription as a rigid rule instead of a starting point.

  Why

  Stress, sleep, and caffeine all shift your actual capacity day to day. The app can't see those inputs unless you tell it how you feel.

  Fix

  Treat RPE like a suggestion, not a command. If the app says RPE 8 but you had 5 hours of sleep, drop to RPE 6 and focus on perfect reps. Dorsi's adaptive AI learns from what you actually lift, so overrides help it get smarter.

How the options compare

Frequently asked questions

From the Dorsi blog

Sources we drew from

1. 1

   Effects of external hand force modeling on validity of inverse analysis of lifting.Peer-reviewed

   Choi E et al. · 2026 · iScience

   Manual lifting tasks pose the risk of musculoskeletal injury, including damage to lumbar intervertebral discs.

2. 2

   After the Prescription: The Clinical Support Gap in Telehealth-Based GLP-1 Care.Peer-reviewed

   Zucker A · 2026 · Journal of medical Internet research

   <h4>Unlabelled</h4>GLP-1 medications offer promise for obesity management and are increasingly accessible via digital platforms.

3. 3

   Remote-Based Brain Endurance Training Enhances Bench Press, Preacher Curl, and Jump Squat Performance in Recreational Athletes.Peer-reviewed

   Rautu A et al. · 2026 · European journal of sport science

   Supervised laboratory-based brain endurance training (BET), a form of combined cognitive and exercise training, benefits exercise performance.

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