Observa: Health & Recovery
HRV, Stress & Sleep Insights
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
See how your sleep, activity, and stress connect. Observa finds the patterns your Apple Watch data reveals — privately, on your device.
Your body generates data every day. Observa helps you understand it.
Observa analyzes your Apple Health data to surface personal patterns between sleep, recovery, stress, heart signals, and activity.
No extra wearable.
No cloud.
Everything stays on your device.
RECOVERY & READINESS
A daily readiness score built from HRV, resting heart rate, sleep quality, and training load.
See exactly which signals are pulling your score up or down — and how today compares to your baseline.
SLEEP ANALYSIS
Sleep score, stages, efficiency, debt tracking, and consistency analysis.
Observa scores your sleep the way a sports scientist would — not just hours, but quality, timing, and restoration.
STRESS & HEART SIGNALS
Physiological stress scoring based on HRV, resting HR, sleep fragmentation, and training load.
Advanced HRV metrics including RMSSD, pNN50, and autonomic balance. ECG-based insights when available.
YOUR PATTERNS
This is where Observa is different.
The correlation engine analyzes weeks of your data to find real associations: how your exercise affects sleep quality, how sleep duration relates to next-day heart rate, which habits actually move the needle.
WIDGETS
Recovery score, sleep breakdown, heart signals, weekly stress, and smart insights — all on your Home Screen. Updated after every sync.
BUILT FOR PRIVACY
No account. No sign-up. No cloud sync. No tracking. No ads.
Your health data never leaves your device.
Period.
WORKS WITH WHAT YOU HAVE
iPhone and Apple Watch. That's all you need. Observa reads from Apple Health — the data your watch already collects.
Observa Pro unlocks 30/90/180-day trends, advanced correlations, stress analysis, and all widgets. Free for 7 days.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
A clearer, deeper view of your body.
This update introduces Home Screen widgets, expanded HRV analysis, ECG-based insights, and new stress patterns—helping you better understand how your body responds over time.
We’ve also refined insights across the app, making everything calmer, clearer, and easier to trust.
More improvements coming soon.
The developer, Antti Aittamaa, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Antti Aittamaa
- Size
- 103.5 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - Mac
Requires macOS 14.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.3 or later.
- iPhone
- Languages
English and 32 more
- English, Arabic, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Observa Pro Yearly $22.99
- Support the developer $1.00
- Observa Pro Lifetime $69.99
- Observa Pro Monthly $3.99
- Copyright
- © 2026 Aittamaa