Experience the Best Wireless Barbell Tracker or your money back.



FLEX measures lift performance with laser accuracy and gives powerful real-time feedback through the FLEX Stronger app (available on iOS and Android).  No subscription required.

FLEX is for anyone ready to take their training to the next level. Train better, avoid injury and track progress with reliable accuracy using the same metrics and training methods as elite performers the world over. FLEX also integrates with the GymAware ecosystem for coaches with Team needs.

Eliminate the guesswork with FLEX. 


My experience with the FLEX has been nothing but outstanding! The battery is insane and lasts a crazy long time. I have been using the FLEX both for my own training and in a group training environment (with a couple of modifications to how I record data for everyone). The 1rm protocol on the app makes it easy and fast to test max efforts (without going to failure) and keep track of your maxes. The team at FLEX are also very helpful and will always do their best to give you advice on how to use the device if needed. 

For someone who trains by themselves, for me FLEX is like my personal coach. It provides me with the ability to set up my lifts using countdown and rest timers and to receive realtime feedback on my lifts. I also appreciate being able to tweak sessions based on the feedback received in the moment as necessary to be able to get the most out of my sessions. I like how easy the product is to use right the way from the initial set up and throughout the lifts. I would highly recommend this to anyone who has a keen interest in seeing measurable results in their training.

Myf Galloway, @myffyg

The most prominent change among my athletes after introducing the Flex sensor is increased focus and autonomy. My training blocks do not need to predict loads and can rely on auto-regulation using velocity and power metrics. It is very uncommon to encounter new training tools that live up to their promise – the Flex sensor is an outstanding exception.

Adam Wingate

The FLEX device has sparked another inextinguishable flame for me in the sport of weightlifting


Real-Time Display: Immediate feedback on every rep and set. Get motivated and stay focused.

Velocity & Power: Optimise training zones, autoregulate load, identify fatigue and maintain intensity.

Bar Distance, Path & Movement: Scrutinise technique and refine your movement patterns.  

Automation: Minimal interaction with your phone for hands-free training. 

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Cutting edge laser optic technology makes for unrivalled precision. For the first time, individuals interested in their performance in the weights room can access the accuracy required to implement Velocity Based Training (VBT), the training method of choice of elite performers the world over.
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For more than 15 years we have provided the sports industry with the world’s leading performance measurement device, GymAware. Our passion for performance and a commitment to continued improvement for all athletes led us to develop the definitive individuals’ solution, FLEX.

FLEX gives individuals the power of accurate performance data previously restricted to the elite. By integrating cutting edge laser optic technology, FLEX ticks all the boxes – portable, accurate and affordable.

Like GymAware, FLEX measures barbell velocity, power, distance, bar path and bar movement. Every rep is measured and every set is tracked. Real-time lift performance displayed through the FLEXStronger app holds you accountable to session intensity and training zones.

FLEX encourages a more social training experience. Compare results, share with friends and follow the performance of your sporting heroes.

At its core, FLEX is all about assisting you to make informed training decisions, in real time and with superior accuracy. Change the way you train, forever.


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