CORTEX Nutrition Intelligence
Nutrition, Recovery Readiness
Only for iPhone
Free
iPhone
Your body generates data 24/7. Cortex turns it into a daily plan — what to eat, when to train, and how to recover. Built on peer-reviewed science.
Cortex is your AI biological command centre. It reads your body's signals - heart rate variability, sleep quality, workouts, and nutrition - then tells you exactly what to eat, when to train, and how to recover. Every day. Personalised to you.
READINESS SCORE
Cortex calculates your daily readiness using HRV, sleep duration, sleep quality, and recent training load. You get a score every morning with a plain-language explanation of what's driving it - and what to do about it.
CORTEX SAYS - YOUR DAILY BRIEFING
Every morning, the AI engine synthesises your biometrics and delivers a concise briefing: your energy status, recovery quality, training recommendation, and nutritional priority for the day.
AI NUTRITION COACHING
Log meals by searching, scanning a barcode, or photographing a nutrition label. Cortex calculates your personal calorie and macro targets using the Mifflin-St Jeor equation and adjusts them daily based on your activity data.
TOMORROW'S PLAN
Before you go to sleep, Cortex builds tomorrow's fuelling protocol - pre-workout nutrition, post-workout recovery targets, and daily macro splits - based on your scheduled training and biometric trends.
CORTEX NOTES
Daily AI observations written from your data. Not generic tips - actual insights drawn from your HRV trend, sleep debt, training load, and nutrition patterns from the past 7 days.
SUGGESTED MEALS
AI-curated meal suggestions built around your current macro targets and goal - whether you're optimising for performance or body composition.
SLEEP AND RECOVERY ANALYTICS
Track sleep duration, quality, and consistency over time. See how your sleep affects HRV and next-day readiness, and get recovery recommendations tailored to your training block.
PRE AND POST WORKOUT NUTRITION
Cortex notifies you 90 minutes before your session with a specific pre-workout meal recommendation based on workout type and duration. After your workout syncs from Apple Health, it fires a recovery window notification with exact protein and carb targets.
CONNECTED DEVICES
Works with Apple Health, Apple Watch, WHOOP, Oura Ring, Garmin, Polar, and Fitbit (via Apple Health). Any workout data that lands in Apple Health is automatically picked up by Cortex.
THE SCIENCE
Every algorithm in Cortex is built on published sport and nutrition science - Mifflin-St Jeor (BMR), Harris-Benedict (activity multipliers), ISSN protein guidelines, and peer-reviewed carbohydrate periodisation research. Visit the Science page on our website for the full methodology.
CORTEX PRO - $59.99/YEAR
Cortex Pro unlocks the full AI engine: Tomorrow's Plan, Cortex Notes, Cortex Says, Suggested Meals, Saved Meals, and advanced readiness and recovery analytics.
Payment is charged to your Apple ID at purchase confirmation. Subscription automatically renews annually unless cancelled at least 24 hours before the renewal date. Manage or cancel your subscription in your Apple ID account settings.
Cortex does not sell your health data. All biometric data is processed on-device. See our Privacy Policy for full details.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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The developer, Kurtis Fraus, 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:
- Purchases
- Identifiers
Accessibility
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Information
- Seller
- Kurtis Fraus
- Size
- 55.8 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- Infrequent
Medical Treatment information
Contains
Health or Wellness Topics
- Copyright
- © 2026 Kurtis Fraus