jarvisbox

Workout Builder

Add exercises with sets, reps, and rest targets to build a complete session plan. Copy or print when done — your data stays on your device.

100% client-side · no upload

How to use

  1. Enter an exercise name, the number of sets and reps, and optionally a weight and rest period.
  2. Click Add Exercise to append it to your workout plan.
  3. Copy the plan to clipboard or print it when your session is complete.

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常见问题

Is this workout builder free?
Yes, completely free with no signup and no usage limits.
Does my data leave my device?
No. Everything runs in your browser. Your workout data is never sent to any server.
Does it work on mobile?
Yes. The builder is mobile-first and works on iPhone Safari and Android Chrome.
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