Very useful app
Helps me with my sleep and nudging me towards cleaner eating habits
Free
In-App Purchases
About
This app integrates sleep, recovery, training, nutrition, and biomarker data into a single system. It provides a daily readiness score, estimates biological age, decodes lab reports, and offers adaptive workouts and AI coaching based on your personal data.
✓Daily readiness score (Arc Score)
✓Biological age estimation
✓Lab report decoding
✓Adaptive workout generation
✓AI-powered nutrition logging
✓Integration with wearables
✓Science-backed calculations
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What's New in Klyft
1.0.3
July 22, 2026
Your biggest update yet. BIOLOGICAL AGE Your biology holds a different number to your birth certificate. Klyft now estimates it — from your biomarkers, recovery, and fitness data — and shows you how to train it down. LAB REPORTS Upload any lab report. Klyft extracts your biomarkers, explains each one in plain language, and tracks every marker over time. BIOMARKERS, CONNECTED Your labs now add context to your daily plan — training, nutrition, recovery. Blood tests stop being paperwork. They become part of the picture.
MoreSubscription plans
Klyft Pro Monthly
Klyft Pro Monthly
$19.991 Month
7 Days trialUser reviews
FAQ
What is Klyft's Arc Score?
The Arc Score is a single, actionable number generated each morning by Klyft. It synthesizes thousands of data points from your wearable, encompassing sleep quality, HRV, daily readiness, nutrition, and fitness metrics, to give you an overview of your body's state.
How does Klyft estimate Biological Age?
Klyft estimates your Biological Age by analyzing your biomarkers, recovery data, and fitness metrics. It shows you how your biological age compares to your chronological age and tracks changes over time, indicating how effectively you are managing your aging process.
Can Klyft analyze my lab reports?
Yes, Klyft can decode your lab reports. You can upload a photo or PDF, and Klyft will extract your biomarkers, explain them in simple terms, and track their changes over time, connecting them to your training, nutrition, and daily plan.
How does Klyft adapt workouts?
Klyft creates workouts that adapt to your daily recovery. It checks your sleep quality and recovery metrics from the previous night to build a session that your body can handle, ensuring every workout is tailored to your current state.
Does Klyft have ads?
No, Klyft is ad-free. As a free app with in-app purchases, it provides an uninterrupted user experience without advertisements.
What devices does Klyft work with?
Klyft integrates with a wide range of wearables and devices, including Apple Watch, Garmin, Oura, WHOOP, Fitbit, Polar, Coros, Suunto, Wahoo, Withings, and continuous glucose monitors like Dexcom and Abbott Libre.
What are the subscription options for Klyft Pro?
Klyft Pro offers two subscription plans: Klyft Pro Monthly at $19.99 per month with a 7-day free trial, and Klyft Annual at $199.99 per year, also with a 7-day free trial.
Is Klyft a medical device?
No, Klyft is a wellness and fitness product and not a medical device. It does not diagnose, treat, or prevent any medical condition. For any health concerns, it is recommended to consult with a doctor.