One wearable tracks everything - even bodyweight workouts.
Audio guidance based on your own data
Work out with with confidence
Each workout is fully tailored to you based on your goals, available equipment and previous data points. Your AI trainer will give you spoken instructions in real-time.
Get Stronger
Get Stronger
Never Guess About Correct Form Ever Again
Don’t let not knowing what to do stop you from being the best version of yourself. We progress you through movements correctly and efficiently so that you feel strong and confident every step of the way:
Automatic form check-ins and real-time corrections.
Programs and workouts based on your experience and skill level.
Gradual increases that push you, but not too far
Live Longer
Live Longer
Live a Longer, Healthier Life
Our goal is happier, healthier humans. Automatic reassessment of your fitness level puts you on the fast track better long-term health outcomes:
Continuous goal tracking.
Leaderboards within your fitness level and demographic.
Fitness achievements and milestones.
Programs that leverage the latest and greatest in exercise science.
Enhance mobility as you age
Enhance mobility as you age
Never Log Your Own Reps, Sets, or Weight Ever Again
No more guessing if you did enough in your session! Using the same technology that pro athletes use, we can make sure every workout you do will bring you closer to your goals:
Real-time weight and speed corrections.
Progressive workout plans with regular check-ins.
Workouts that always leave you feeling accomplished.
Unlock your best self
Unlock your best self
Reach Your Goals in Record Time
Like a real life personal trainer, just tell Calibrex your fitness goals and we’ll make sure you’re tracking towards them:
Workout plans tailored to your goals and experience level.
Automatic progress tracking.
Real-time updates, corrections, and insights.
Personal training for you
Elite Coaching, Fraction of the Cost.
This small, easy-to-use magnet keeps track of your workout details—like how many reps you do, how long you rest, how fast you move, and how well you maintain your form.
Your coach will give you real-time audio tips, progress updates, and helpful stats so you can see how you’re improving every step of the way.
Trusted by fitness enthusiasts in 17 countries and trusted by top universities.
Calibrex 3 Beta User Testimonials
Early Adopters Love Calibrex
I didn't think you can do a guided workout class without a trainer. I started laughing the first time I heard it speak out loud but a few reps in I felt like I was in a private workout class.
— Lauren G
Calibrex 3 Beta Member
It felt so strange at first that I didn't need to use my phone at between sets. It tracks all my reps, tells me what to do next and counts me down!
— Helen P
Calibrex 3 Beta Member
Hardware shipped quickly and set up was easy, don't need anything beyond whats in the box. Gives me great insights into where I'm at and when it's time to lift heavier. I finally put these dusty dumbbells to use lol
— Andrew G
Calibrex 3 Beta Member
I went from being shy to doing full blown strength workouts all by myself within 2 weeks!
— Penny A
Calibrex 3 Beta Member
Glad to see something for weights in the fitness tracker space this has given me all the data I could reasonably ask for, new features roll out continually, etc. Name another wearable option for lifting at this price point?
— Kyle B
Calibrex 3 Beta Member
Planning workouts in my biggest nightmare when it comes to going to the gym. This gives me a new workout, all I have to do is show up.
— Georgia T
Calibrex 3 Beta Member
I've been going to the gym for 3 years and for the first time in a while I got stuck in a plateau. Can't rely on the same ol' split every time. Lifting has become more fun now that I have numbers to compare from each session.
— Tyler P
Calibrex 3 Beta Member
I'm a calisthenics guy so I mainly use the body clip to track my workouts. Honestly the automatic rep tracking and set countdown are godsent. Exactly what I needed for progressive overload.
— Jacob M
Calibrex 3 Beta Member
The First (sometimes) Wearable Designed Specifically for Strength Training.
Calibrex 3 is Designed & Built With 🖤 in New York City.
Calibrex 3 is your new personal trainer. A magnetic, sometimes wearable, fitness tracker - it seamlessly attaches onto your body or any gym equipment and automatically tracks every rep and other important workout metrics like rep speed, power, time under tension, form and more - just like a real life personal trainer would. The Calibrex app leverages the latest in sports science, and our proprietary ai, Calibrex Coach Cali, guides you in real time based on your goals.
We've found that most fitness trackers focus mainly on cardiovascular metrics and steps but nothing that can really help us understand our progress in the gym. Calibrex brings technology that currently only pro athletes in pro sports facilities have, in a portable and affordable form factor.
How long does the battery last?
The battery is designed to last about two weeks or 8-10, 45-60' workout sessions.
Do you have a warranty?
Every Calibrex 3 comes with a Calibrex™️ 1yr warranty.
We back our Calibrex devices with a one year warranty, ensuring that any issues or problems will be promptly resolved.
What metrics does the Calibrex 3 track?
The Calibrex 2 tracks:
Reps/Sets
Rep Speed (m/s) & Power (w)
Rest Times
Speed Loss (Fatigue Monitoring)
Calories Burnt
more coming soon!
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