ChatGPT integration

Describe a workout.
Train in Pacelab.

The Pacelab Interval Builder is a Custom GPT in ChatGPT. Tell it what you want — it builds the workout and sends you a link to open it in the app.

Open Interval Builder GPT Get the app first
  • ✓ Free Pacelab app
  • ChatGPT Plus / Pro for the GPT
ChatGPT generating a workout that opens in Pacelab

How it works

Three steps. About a minute.

  1. 1

    Open the Custom GPT

    Use the Pacelab Interval Builder in ChatGPT (Plus or Pro).

  2. 2

    Describe your workout

    Duration, equipment, focus. The GPT designs blocks, exercises, reps, and rest.

  3. 3

    Open the share link

    Tap the pacelabintervals.com/share/… link on your phone. Workout opens in Pacelab.

Try these prompts

Copy & paste to get going.

"Create a 20-minute HIIT workout with no equipment — 4 Tabata rounds."
"Build a 5-round kettlebell strength circuit with 6 exercises."
"Make me a 12-minute EMOM with 3 alternating exercises."
"Design a progressive pull workout — increase reps each round."

Get Pacelab Intervals

Install the app so share links open in one tap. Free, no account.

Download on theApp Store
Get it onGoogle Play

FAQ

Do I need ChatGPT Plus?
Yes. Custom GPTs require Plus or Pro. The Pacelab app is free regardless.
Does Pacelab store my conversation?
No — only the workout data the GPT sends to our API. See the Privacy Policy.
Prefer Claude?
See Claude + MCP integration.