reThrive: Your True Age
Discover your biological age
Free · In‑App Purchases
Join 2,000+ people optimizing their lifespan with reThrive. Connect your wearables and get instant science-backed insights into how fast you're aging.
Your biological age matters more than the number on your birthday cake.
reThrive transforms data from your devices into science-backed insights about how fast you're aging and exactly what to do about it.
PRIVACY FIRST
Your biometric data is encrypted and belongs to you. We never sell your information. You control what you share and can delete your data and account anytime.
DISCOVER YOUR TRUE AGE
Most health apps track steps and calories. reThrive tells you what those metrics actually mean for your longevity. By analyzing four core biomarkers (VO2max, heart rate variability, resting heart rate, and lean body mass), we calculate your True Age: a biological age estimate that reflects your actual health status, not just the years you've been alive.
A True Age lower than your chronological age means your body is aging more slowly than average. A higher True Age suggests faster aging. Either way, you'll know exactly where you stand.
TRACK YOUR PACE OF AGING
True Age shows the destination. Pace of Aging shows the journey. This dynamic metric reveals whether you're slowing down or speeding up the aging process based on recent changes in your biomarkers. A Pace of Aging below 1.0x means you're actively reversing biological aging. Above 1.0x means you're aging faster than average.
Weekly updates keep you informed. Daily actions keep you improving.
ACTIONABLE THRIVE LEVERS
reThrive doesn't just measure your health. It shows you which specific actions will improve your biological age most effectively. Our Thrive Levers break down into three daily controllables:
• Movement: Optimize your activity and cardiovascular fitness
• Performance: Build strength and maintain lean muscle mass
• Recovery: Improve sleep quality and manage stress through HRV
Each lever connects directly to your biomarkers, so you always know which actions matter most for your goals.
WORKS WITH YOUR DEVICES
reThrive integrates seamlessly with the wearables and health platforms you already use:
• Apple Watch and Apple Health
Upcoming:
• Garmin
• Oura
• Fitbit
• Polar
• And more
Your data stays in sync automatically. No manual entry required.
SCIENCE-BACKED METHODOLOGY
Our True Age algorithm is built on peer-reviewed longevity research linking cardiovascular fitness, autonomic nervous system health, body composition, and all-cause mortality risk. We translate complex science into clear numbers you can act on.
Every calculation is transparent. Every recommendation is evidence-based. Every update brings you closer to your healthspan goals.
WHO IS THIS FOR?
reThrive is built for people who:
• Want to optimize healthspan and longevity, not just track workouts
• Own wearables but feel overwhelmed by disconnected data
• Are looking for an alternative to expensive subscription-based fitness platforms
• Believe that understanding biological age is more valuable than counting steps
• Want science-backed insights, not generic fitness advice
Whether you're an athlete optimizing performance, a health enthusiast exploring longevity science, or simply someone who wants to age well, reThrive gives you the metrics and actions that actually matter.
START YOUR JOURNEY
Join thousands of people who are taking control of their biological age. Download reThrive, connect your wearables, and discover your True Age today.
Questions or feedback? Contact us at support@rethrive.co
Terms of Service: https://www.rethrive.co/legal/terms-of-service
Privacy Policy: https://rethrive.co/legal/privacy-policy
Ratings & Reviews
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What's new in this update:
Smarter notifications
You'll now get a push notification and see a badge on the help button when we've replied to your message. No more wondering if we've gotten back to you.
Performance improvements
We've squashed some bugs and fine-tuned how the app works behind the scenes to make everything run more smoothly.
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This release focuses on making it easier to get help when you need it. We're here to support your journey.
The developer, Thrive Group, 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 Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Contact Info
- User Content
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Contact Info
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- fitIQ LTD
- Size
- 77 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later.
- Languages
- English
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Founding Member $24.99
- Copyright
- © 2025 Thrive Group