byrna
AI Fitness Coach
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
One score for your training, fuel, sleep and consistency — so you always know exactly where you stand. Plan, coach and progress in one app.
Byrna turns training into a system. Get an AI strength coach that builds and adapts your program, track every set, and watch your Byrna Score climb from 300 to 850 as you get stronger.
And it's more than fitness — a Bible verse of the day and a devotional meet you every morning, so you train your spirit alongside your body.
Most fitness apps just log what you did. Byrna tells you what to do next — and shows you the progress to prove it's working.
WHAT YOU GET FREE
Full workout logging — every set, rep, and weight
Daily Devotional — a Bible verse of the day with an AI-built study, your own saved notes, and full history
Your Byrna Score (300–850) tracking your training
Build and edit your own program — including an optional weekly cardio day
Daily check-in — log last night's sleep and today's bodyweight
Supplement tracking
BYRNA PREMIUM
AI Coach — a strength coach that adapts your program to every session
Progress Analytics — strength, volume, and score trends over time
Muscle Heatmap — see exactly which muscles you've worked and what's recovering
Food Logging — log meals and hit your macro targets
Byrna Premium: $9.99/month or $79.99/year. A 1-week free trial is available for new subscribers. Payment is charged to your Apple ID at confirmation. Subscription auto-renews unless canceled at least 24 hours before the period ends; manage or cancel anytime in your App Store account settings.
Terms of Use: https://usebyrna.com/terms
Privacy Policy: https://usebyrna.com/privacy
Bug Fixes
The developer, AIDEN AUGUST LINDAN BUCK, 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
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- AIDEN AUGUST LINDAN BUCK
- Size
- 16.2 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
18+
- 18+
- This app is rated 18+ with content restrictions.
Some content may be rated higher, and may therefore be restricted and managed by the developer through in-app controls. - In-App Controls
Age Assurance
Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Premium Monthly Subscription $9.99
- Premium Yearly Subscription $79.99
- Copyright
- © 2026 Aiden Buck