Twillie

Invite-only · Free · Private

A quiet endurance coach that reads your watch, so you don't have to.

Twillie turns your Garmin data into one short brief each morning and a training plan that adapts to how you slept, how you recovered and what you did yesterday. Built for amateur runners and trail runners with a goal and a busy life.

Twillie is a small private project for a closed group of friends. Access is by invitation only.

Tuesday · morning brief

sleep
7h46

sleep

HRV
84 ms

HRV

resting HR
48

resting HR

Good night, but HRV is still under your usual range. Today stays easy: 50 min run, conversational pace. Thursday's leg session holds. The session is already on your watch.

Illustrative example.

How it works

  1. 1

    Connect your Garmin account

    You authorize Twillie in Garmin Connect. You can revoke access at any time from Twillie or from Garmin Connect.

  2. 2

    Tell your coach what you are training for

    A short conversation sets your goal, your race date, your history, your injuries and the time you actually have each week.

  3. 3

    Get a brief every morning

    Twillie reads last night's sleep and HRV and your recent training, then adjusts the plan for the days ahead. Planned sessions are sent to your Garmin calendar so they appear on your watch.

What Twillie reads

  • Sleepduration, stages, sleep score
  • Recoveryovernight HRV, resting heart rate, stress, Body Battery
  • Trainingactivities, duration, heart rate zones, training load and training effect

Your data stays yours

  • No advertising, no sale or sharing of your data, no paid tier.
  • Only the data needed for coaching is read. GPS tracks are never sent to the AI.
  • Disconnecting deletes your Garmin data from Twillie.
Read the privacy policy

Questions, or want to be invited? Write to hello@twillie.io.