Get the answers your Apple Watch can't give you.
Corro reads your full Apple Health history and answers any question — or surfaces the trends you'd have missed. In plain English, with your actual numbers.
Free · No new hardware · iOS 16+ 
Your Watch records.
Corro reads it back.
Apple Health stores everything. Corro tells you what it means.
Your Apple Watch knows.
Why shouldn't you?
At the same time, your training volume is up 30%. That combination is a recipe for fatigue.
Prioritize sleep this week. Even one extra hour makes a measurable difference in HRV recovery.
Your training volume is also up: 4.2 sessions/week now vs. 2.8 six months ago. The consistency is paying off.
Your resting heart rate has plateaued — adding 2 cycling or running sessions per week would improve cardiovascular fitness without sacrificing strength gains.
Corro watches
so you don't have to.
Every Sunday, Corro analyzes your week and emails you what changed.
No app to open. No dashboard to check. Just the things that matter, in your inbox.
- Spots trends you'd miss — sleep declining, recovery stalling, volume shifting
- Compares this week to last week with specific numbers
- Tells you the one thing to focus on next
Your heart rate variability averaged 34ms this week, down from 44ms last week. That's a significant drop.
Possible cause: you trained 6 days straight with no rest day. Your body is accumulating fatigue faster than it can recover.
This week's focus: Take two full rest days. Your HRV typically rebounds within 48 hours when you do.
Everything else shows you numbers.
Corro tells you what they mean.
Built for the Watch you already wear
Corro reads everything your Apple Watch has ever recorded — heart, sleep, workouts, recovery, years deep. No new app on your wrist, no new account, no extra hardware.
Your full history
Corro analyzes up to 10 years of health data. Not just today — your entire training history, sleep patterns, and recovery trends.
Actual answers
Ask a question in plain English. Get a specific answer with real numbers — not a chart you have to interpret yourself.
Health data never sold or shared. Delete everything from the app at any time. Read our privacy policy →
Your data is there.
Start asking.
25 free questions. No credit card. No new hardware.