Corio: Why Your HRV Dropped

Oura shows the tag. Corio shows the nights.

You tag your nights — late meal, workout, magnesium, hot room. Oura keeps the list and analyzes almost none of it: custom and repeating tags never get a Discovery. Corio takes every tag, including those, and shows the nights behind it against your own baseline — so you know what moved your HRV and sleep, and what didn't.

Oura says what. Corio says why.

WHAT THE DEVELOPER'S OWN 298 NIGHTS SHOWED
Real numbers from one Oura Ring, computed the same way Corio does it for you — each tag's nights against your own 7-night baseline. No averages from other people.

• Late bedtime → sleep score 84 → 76. Every hour later cost about 5 points and 40 minutes of sleep.
• Late bedtime → HRV: 0%. Same nights, HRV didn't move (31.3 vs 31.7). The drop was sleep duration, not recovery. The score can't tell you that — the tags can.
• One warm night, no AC → HRV 49 → 29, resting heart rate 53 → 59, on a night with 8.7 h of sleep and a sleep score of 91. The score looked fine. The body didn't.

HOW IT WORKS
1. Connect — sign in with Oura. Corio pulls your nights and the tags you already log in the Oura app. They keep arriving even when Corio is closed.
2. Tag as usual — in Oura or in Corio. Late meal, caffeine, workout, travel, illness — anything. Late meals, workouts and late bedtimes are tagged for you automatically.
3. Get the receipt — every morning: what changed, by how much, and the exact nights that prove it. A preliminary read after 3 nights, the full receipt at 5. Share it if you like.

ALSO INSIDE
• Readiness, HRV, resting heart rate, SpO2 and body temperature against your own baseline
• Sleep stages, bedtime rhythm, latency and efficiency; night HRV and heart rate hour by hour
• Stress vs recovery minutes across the day
• Training load with heart rate zones from real per-second data
• Nutrition with photo logging, macros, and food-to-sleep correlations
• A coach that answers from your own week — one thing to do today
• Compare recovery with friends — something your ring app doesn't do

BUILT FOR THE RING YOU ALREADY OWN
Corio syncs your Oura history automatically. Apple Health works too, and WHOOP, Garmin and Polar are supported — but Oura is where Corio is at its best.

FREE AND PREMIUM
Your first tag receipt is free. Premium unlocks every tag, the coach, food photo analysis and deep correlations.

SUBSCRIPTION
Corio Premium is an auto-renewable subscription. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple Account settings.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://marendych.github.io/corio-privacy/privacy.html

Corio is not affiliated with Oura Health. Oura is a trademark of Oura Health Oy.