AI fitness coaching, derived from your own data
Know what to do today — and whether you're improving.
Derive turns your Apple Health data into personalized metrics, a daily readiness score, and an AI coach that actually knows your training.
Built for Apple Watch & Apple Health.
What Derive does
Your data, interpreted — not dumped on you.
Your watch records the raw signals. Derive does the interpretation — quietly, every day — and tells you what it means for your goal.
An AI coach that knows your numbers
Ask about training, recovery, sleep, or fueling and get answers grounded in your own metrics. A fresh batch of AI credits arrives each week.
A daily Training Readiness score
Today gives you one clear score, threshold alerts when something shifts, and a rolling 3-day AI review — refreshed every morning so you can plan the day.
A dashboard built around your goal
Your coach picks the 8–12 metrics that actually matter for what you're working toward — so the screen stays focused on signal, not noise.
A long-term Fitness Journey
Step back and see the trend lines: cardio fitness, activity, sleep, and body composition over months — so progress is something you can actually see.
AI Coach
Answers grounded in your numbers.
Instead of generic advice, the coach reasons over your own recovery, sleep, and training trends — then suggests what to do next, in language you can act on.
My HRV dipped this week and I felt flat on my run. What should I do?
Your HRV is down about 9% and resting heart rate is up 4 bpm versus your baseline — signs you're under-recovered. I'd swap tomorrow's intervals for an easy Zone 2 hour and protect sleep tonight. Your load is fine; recovery is the limiter right now.
Got it. Will that hurt my fitness?
No — one easy day won't cost you. Your 30-day VO₂ trend is still climbing. Let's reassess readiness in the morning.
How it works
From raw data to a daily plan, in three steps.
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Connect Apple Health
Grant read-only access to the data you choose. Derive never writes anything back to Apple Health.
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Get your metrics
Derive computes your derived fitness metrics, trends, and a daily training-readiness score automatically.
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Know what to do today
Read your rolling 3-day review, check today's score, and ask the AI coach anything about your training.
Fitness Journey
See the long arc, not just today.
Daily readiness keeps you honest in the moment. The Journey view shows whether the work is paying off over weeks and months.
Privacy-first by design
Your health data stays yours.
Derive reads from Apple Health with your permission and treats that access with care. The point is to help you understand your own training — nothing more.
- Reads Apple Health read-only — we never write data back.
- Your health data is never sold and never used for advertising.
- No advertising or third-party tracking SDKs, and you can delete everything in-app.
Make sense of your training.
Derive is launching soon for Apple Watch and Apple Health.
Coming soon to the App StoreDerive provides personalized fitness insights and general guidance. It is not medical advice and is not a substitute for a qualified health professional.