Corpus: AI Endurance Coach

Got a race date and an Apple Watch? Corpus writes your whole plan to race day and adapts it to your sleep, your sessions and your week. 7 days free.

Training for a marathon, a triathlon, an Ironman or a cycling event, with an Apple Watch on your wrist? Corpus is the coach that writes your whole plan to race day and changes it as you train.

Your plan is 100% yours. Not a template with your name on it: it is built on what your body can actually do and on how you live, and it is made to bring out your best version.

Tell it your race and the days you can train. It asks what it needs to know, then writes every session from this week to race day: warm-up, work, cool-down and the pace for each.

Then it keeps coaching. Corpus reads your Apple Watch through Apple Health: sleep, heart rate variability, resting heart rate, every workout with its pace and route. When a night goes badly or a run comes in harder than planned, the coach sees it, and when you ask to move Thursday's intervals to Friday, the week changes on the spot.

WHAT YOU GET

• A full plan to race day, written in one conversation. Running, cycling, swimming and triathlon, from a first 5K to an Ironman.

• A coach you can talk to. Say a session felt too hard, report how a test went, tell it your week just changed. It answers from your numbers and adjusts your plan through the same conversation.

• Sessions that know why they exist. Every day carries its purpose, its structure and its target pace, and the week around it is one glance away.

• Your recordings, matched to your plan. Runs from your watch land at the top of the Plan tab, linked to the session they completed, with the hard efforts checked against heart rate and pace.

• 3D route replays. Watch each run fly over the map in three dimensions and export the video to share.

• Insights from your own data. Corpus turns your notes into tags, correlates them with what your watch measured, and shows you what actually moves your recovery.

• Fitness, fatigue and form, explained. Training load over weeks, in words you can act on.

MEMBERSHIP

The 7-day free trial unlocks all of it: the whole plan to race day, the conversation with your coach, and every adaptation it makes as your training changes.

Corpus Membership is €3.99 a month after a 7-day free trial, billed through your Apple ID. Cancel any time in Settings. Payment is charged to your Apple ID account at confirmation of purchase. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy: https://corpus.dvpuchades.com/en/privacy/

WHAT CORPUS NEEDS FROM YOU

• Record every session from the Workout app on your Apple Watch. Corpus reads it back with pace, heart rate and route.

• Wear the Watch to bed. That is where sleep, HRV and resting heart rate come from, every morning.

• Write a note about your day in the app. A late dinner, a stressful week: the coach learns how your habits move your training.

HOW IT WORKS

1. Choose your sport, your event and your date. Add a target time if you have one.
2. Connect Apple Health. Corpus reads only. It never writes to your health data.
3. Meet your coach. It asks about your training days and history, then writes the whole plan.
4. Train. Record every session from the Workout app on your Apple Watch, wear the Watch to bed and write a note about your day. Open the app in the morning for today's session, and after to see how it went.

PRIVACY

Your health data stays on your phone. The coach sees only what it needs to answer: your message, a summary of your plan and the numbers relevant to the question. Nothing you say is kept on our servers: the one thing held there is your plan while it is being written, deleted the moment your phone receives it and after 24 hours regardless. No advertising, no tracking.

Corpus requires an iPhone running iOS 26 and works best with an Apple Watch. Corpus is a training tool, not a medical device; talk to a professional about any health concern.