Gradual: AI Health & Labs

Your blood work, finally explained. Gradual brings your lab results together, shows what every marker means, and turns them into a biological age you can improve.

YOUR LAB RESULTS, EXPLAINED
Every result in one place, in plain language. Track 40+ biomarkers across cholesterol and ApoB, glucose, hormones, thyroid, vitamins, inflammation, and more. Works with results from any lab, including the health records in Apple Health.

OPTIMAL, NOT JUST "NORMAL"
See each marker against the lab's reference range and an optimal range backed by peer-reviewed citations. Know at a glance what's on track and what's worth discussing with your doctor.

EVERY MARKER, OVER TIME
Each new blood draw builds your history. See which markers are improving and how your lifestyle changes show up in your numbers. Share a scorecard of your results in one tap.

ASK WHAT YOUR RESULTS MEAN (PRO)
AI analysis reads your results alongside your vitals, training, and habits. Ask follow-up questions and get answers grounded in your own data. For education, not diagnosis.

YOUR BIOLOGICAL AGE (GRADUAL AGE)
See beyond the calendar. Your Gradual Age is a composite biological age built from five pillars: cardiorespiratory fitness, autonomic health, sleep quality, vascular function, and PhenoAge blood biomarkers. Compare each dimension to your chronological age, track your trend over time, and share your results.

TEST YOUR FITNESS AGE AT HOME
Six guided tests reveal your strengths and what to improve. See how you compare with people your age and sex, then retest to track your progress.

HABITS THAT MOVE YOUR NUMBERS
Small inputs, big outcomes. Build daily routines around supplements, fitness goals, mindfulness, and sleep targets. Track streaks and monitor weekly consistency with zero friction and no manual entry.

DAILY READINESS
Know when to push and when to recover. Your Readiness Score combines HRV, resting heart rate, sleep, training strain, and mood—calibrated to your personal baselines, not population averages.

CONNECT YOUR DEVICES
Sync with Apple Health and Strava. Sleep, HRV, resting heart rate, VO2 max, training load, and more flow in automatically.

AI INSIGHTS
Get context-aware analysis across your habits, vitals, and labs. Tap any insight to ask follow-up questions. Rule-based insights are always free.

TRAINING LOAD
Track weekly volume across running, cycling, and strength. See your chronic load trend and get recovery recommendations based on your current state.

STRENGTH TRAINING
Log every rep and set with a purpose-built workout tracker. Drag to reorder exercises, track progressive overload, and review your session history. Start from templates or build your own.

HEALTH NEWS
Stay current with the latest longevity and health research. Gradual aggregates articles from PubMed, NIH News in Health, and Harvard Health — each with an AI-generated summary so you get the key takeaway in one sentence, no jargon.

GRADUAL PRO
Unlock the full experience:
* Advanced AI Analysis: Interactive follow-up chat for deeper health insights.
* Enhanced Lab Imports: 10 AI-powered lab imports per month.
* Smart Bedtime Reminders: Gentle nudges for unfinished habits.
* Priority Support.

Always Free: Habit tracking, Gradual Age, Readiness Score, and biomarker tracking are free for all users, forever.

PRIVACY & SECURITY
Your health is personal. Gradual does not store your health data on our servers. Your vitals and lab results are encrypted on-device and synced securely via your private iCloud account. No account creation is required to use the app.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Supplemental Terms of Service: https://gradual.health/terms-of-service.html