Personal Trainer: GrexFit
No Excuses Workout Coach
Only for iPhone
Free · In‑App Purchases · Designed for iPhone
iPhone
Your AI personal trainer in your pocket. Daily workouts built for your goals, an AI coach that answers instantly, and zero excuses to skip. Try free for 3 days.
GREX is your no-excuses personal trainer. Tell it your goals once — it builds your workout plan, coaches you through every session, and gets smarter as you get stronger.
NO PLANNING REQUIRED
Every day you open the app, your workout is already built. Gym or home, heavy or light, 3 days a week or 6 — GREX adapts to your life, not the other way around.
ALEX, YOUR COACH
Got a question? Ask Alex. How to warm up for chest day. Whether to use dumbbells or the cable machine. What to eat after a hard session. Alex gives you real answers instantly — no scrolling Reddit, no waiting for a response.
TRACK YOUR STRENGTH
Every workout is logged automatically. Watch your lifts go up week over week. GREX tracks your personal records, streak, and total workouts so you always know how far you've come.
SWAP IN ONE TAP
Stuck at home? No equipment? Hit the swap button and GREX rebuilds your workout on the spot using what you have available. No excuses.
BUILT FOR REAL PEOPLE
Whether you're just starting out or you've been training for years, GREX meets you where you are. Set your experience level, your equipment, and your schedule — the app does the rest.
Privacy Policy: https://grexfit.com/privacy.html
Terms of Use: https://grexfit.com/terms.html
Ratings & Reviews
This app hasn’t received enough ratings or reviews to display an overview.
The developer, Tyler Pratt, 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 Not Linked to You
The following data may be collected but it is not linked to your identity:
- Health & Fitness
- Contact Info
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Tyler Pratt
- Size
- 41.3 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. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- Languages
- English
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- GREX Pro Weekly $4.99
- GREX Pro Monthly $14.99
- GREX Pro Yearly $79.99
- Copyright
- © 2026 Grex Fitness