Discover your true biological age. Improve it with personalized AI.
All your health data analyzed fully offline. 100% on-device. No cloud. No tracking. Just science.
Takes 3 minutes. Your data never leaves your device.
Your Health, Explained by AI
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Ask: Why is my body age higher this week?
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Ask: How should I train based on yesterday's sleep?
Get instant answers about your health data.
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Why MakeFit?
Most health apps upload your data to their servers. MakeFit runs entirely on your device. Your data stays yours — always.
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Body Age Analysis
Category breakdown and key drivers of your biological age.
Home Dashboard
Overview of your health metrics, vitals, and training zones.
Workouts & Goals
Weekly workout goals and personalized workout recommendations.
"Top app for longevity. I like that I have the biological age, it motivates me to stay consistent."
Ready to improve your biological age?
Why Biological Age Matters
Your biological age reflects how your body is actually performing — not your birthday. Improving it means better energy, better performance, and better long-term health.
Research shows that higher cardiorespiratory fitness is strongly linked to lower all-cause mortality.
Backed by Science
Every metric MakeFit tracks is grounded in peer-reviewed research. These are the studies behind the numbers.
Survival of the Fittest: VO2 Max as a Key Predictor of Longevity
Higher aerobic capacity is a strong, independent predictor of both all-cause and disease-specific mortality — people with greater cardiorespiratory fitness live significantly longer.
Resting Heart Rate as a Predictor of Mortality and Disease Risk
Resting heart rate predicts adverse outcomes including mortality and disease development even in otherwise healthy individuals — and changes over time carry additional predictive value.
Daily Step Counts and Health Outcomes: An Umbrella Review of Observational Studies
Higher daily step counts consistently reduce all-cause mortality, cardiovascular events, and metabolic disease — with older adults benefiting most from 6,000–8,000 steps and younger adults from 8,000–10,000.
The Detrimental Effects of Inadequate Sleep on Health and Public Safety
Chronic inadequate sleep is linked to hypertension, obesity, type-2 diabetes, cardiovascular disease, impaired immunity, and accelerated neurodegeneration.
Sleep Quality and Its Role in Physical and Mental Health Outcomes
Low sleep efficiency — spending significant time in bed awake — has significant adverse health outcomes across cardiovascular, metabolic, and cognitive domains.
Irregular Sleep Timing Is Independently Linked to Poorer Health Across 14 Domains
In over 92,000 adults, inconsistent sleep schedules and social jetlag were independently associated with worse outcomes spanning metabolic, cardiovascular, and mental health — regardless of total sleep duration.
Lean Body Mass Declines Predictably With Age and Matters for Long-Term Health
Lean mass declines with age in a measurable, predictable way — tracking it enables early intervention and is linked to functional independence, metabolism, and overall longevity.
Resistance Training Is Medicine: Effects of Strength Training on Health
Just 10 weeks of resistance training increases lean muscle mass, boosts resting metabolic rate by 7%, reduces fat, and improves cognitive function and functional independence in aging adults.
Heart Rate Recovery After Exercise Predicts All-Cause Mortality in Healthy Adults
Among nearly 20,000 adults without existing cardiovascular disease, a slow heart rate recovery after exercise was a significant independent predictor of death over 12 years.
Moderate Aerobic Zones Maximise Fat Oxidation and Cardiovascular Adaptation
Training in the moderate aerobic range (Zone 2–3) maximises fat oxidation and cardiovascular adaptation, making it the most efficient intensity for improving aerobic base and metabolic health.
High-Intensity Training Zones Drive Greater Aerobic Performance Gains
Spending more time training at high intensity (Zone 4–5) produces significantly greater improvements in aerobic capacity at the metabolic threshold compared to lower-intensity training alone.
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MakeFit helps you improve your biological age using personalized health intelligence.