Calibrex | The World's Best Personal Trainer Anywhere, Anytime

Calibrex

Real-time coaching through your headphones

Get elite personal training on demand - no thinking required.

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Pick a workout

Choose from hundreds of workouts, filtered to your goals, available equipment and schedule.

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Get coached in real-time through your 🎧

Put your phone away, the Calibrex coach will tell you exactly what to do and track all your workout metrics in real-time.

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Get personalized workout summaries & leaderboards

Everything you need to know about your workout at a glance, and see how you compare against others in your age group.

Meet your new personal trainer for less than your TV subscription 💸

This tiny smart magnet automatically tracks your reps, rest, speed, calories, form and more. Get real-time audio training, trends, progress reports, analytics, and much more.

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Get the highlights

The best personal trainer at your fingertips

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.

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Get Stronger

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Live Longer

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Enhance mobility as you age

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Unlock your best self

Based on real data from over 10M reps collected with Calibrex hardware in 18 countries over 4 years.

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

Over 10M Reps Tracked

Thousands of lifters from beginners to pro athletes are training smarter with Calibrex.

Hit your goals faster with unlimited access to the world's best personal trainer.

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FAQs

What is Calibrex 3?

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!