THE SMARTEST HEALTH TRACKER FOR APPLE WATCH
Prysm transforms Apple Watch and iPhone health data into personalized daily guidance. Trusted by athletes, biohackers, and anyone serious about longevity — backed by peer reviewed science.
Whether you want to train harder, sleep better, or slow down aging, Prysm tells you exactly what your body needs today. No guesswork.
KEY FEATURES
-BIOLOGICAL AGE TRACKING
Discover if you're aging faster or slower than your calendar age. Track your pace of aging over time and get personalized recommendations to turn back the clock.
-ADVANCED SLEEP ANALYSIS
Deep sleep, REM, sleep debt, and quality scores — all in one place. Wake up knowing exactly how recovered you are and what to do about it.
-ENERGY BANK
Your body's battery level, updated in real-time. Know exactly when you'll hit peak performance or need rest based on your sleep, strain, and recovery.
-STRESS MONITORING
Track stress through HRV analysis and see your nervous system balance throughout the day. Get alerts when stress spikes with breathing exercises to bring it down.
-SMART SITTING ALERTS
Combat desk-job damage by tracking sedentary time and understand its impact on your health.
-EARLY WELLNESS DETECTION
Prysm spots trouble before you feel it — monitoring temperature changes, HRV drops, and elevated heart rate to warn you when your immune system is fighting something.
-STRAIN & RECOVERY SCORES
Know exactly how hard you can push today. Personalized strain targets based on your recovery score prevent overtraining and optimize performance.
-DAILY BIOMETRICS DASHBOARD
Your vitals vs. YOUR personal 14-day baseline: HRV, resting heart rate, SpO2, body temperature, respiratory rate, sleep, and strain.
-HEALTH REPLAY
End each day with insights on what went well, what didn't, and exactly what to focus on tomorrow.
WHY PRYSM OVER OTHER HEALTH APPS?
Science-First: Every algorithm based on peer-reviewed research
Truly Personalized: YOUR baseline, not population averages
Actionable: Clear daily guidance, not data overload
Private: All data stays on your device. We never sell your information.
WORKS WITH
Apple Watch • Apple Health • Sleep tracking • Heart rate • HRV • Workouts • Blood oxygen • Body temperature • Respiratory rate • Eight Sleep • Blood Glucose • Stelo CGM
Start understanding what your body is telling you. Download Prysm free today.
DISCLAIMER: This is a health and fitness app, not a medical device. It is not intended to diagnose, treat, cure, or prevent any disease. Consult a healthcare professional before making medical decisions.
Questions, feedback, or collaboration ideas?
Reach out anytime at support@marianigroup.app
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
I honestly didn’t realize how much I needed this app until I started using it. The layout is clean, the features are robust, and it feels very well thought out overall. Being able to track fasting alongside my biomarker data and view correlations over time would really elevate the experience. This addition would make the app even more powerful for users focused on metabolic health.
Seamless with Apple Watch
Cre_Cycle
I almost never write reviews, but this app really impressed me. It’s been incredibly consistent and intuitive, and the insights line up well with how I feel day to day. Using it with my Apple Watch has been seamless and genuinely helpful.
This should be built into iPhone
Sally_co615
The way this app blends sleep, recovery and stress is something Apple should’ve done years ago. It almost feels like a missing default app that finally connects my body to my data!
Developer Response
Thank you for such a thoughtful review. It’s incredibly meaningful to hear that the app feels like a natural extension of your health data, that’s been our goal from day one!
Really appreciate the unique algorithms
Stacie_G17
This app provides a lot more helpful insights than other health monitoring apps. I have yet to find an app that is able to provide clear health metrics with explanations on how they reach the “scores”.
Developer Response
Thank you for the thoughtful review. Our goal is to provide clear, transparent health metrics. Not just scores, but meaningful explanations behind how they’re calculated. Users can better understand and trust their data this way. We’re continually refining our algorithms and expanding insights, and feedback like yours helps guide that work. We appreciate your support.
We’re constantly enhancing our app to bring you a smoother, more reliable experience — this update includes performance improvements and minor bug fixes.
Version 1.4.0
The developer, MarianiGroup L.L.C., 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.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
MarianiGroup L.L.C.
Size
14.1 MB
Category
Health & Fitness
Compatibility
Requires iOS 26.0 or later.
iPhone Requires iOS 26.0 or later.
Mac Requires macOS 26.0 or later and a Mac with Apple M1 chip or later.
