Features & Capabilities

Revolutionise the way you train and prepare in the weights room!

The FLEX Stronger app syncs to a FLEX barbell sensor to deliver real-time feedback straight to your device.

Track, manage and review training performance just like elite and professional athletes right across the globe, through the Major Leagues, UFC, Premier League and Olympic institutes.

Developed by the team at GymAware, FLEX packages everything we learned from delivering gold standard products to the pro ranks into the only VBT system developed specifically for individual use.

The smartest system on the market, FLEX automates your entire training experience. Select an exercise. Load some weight. Lift. Completely wireless. No calibration, adjustments or exercise creation required.

Perfect for individual athletes, remote coaches and personal trainers.

Performance Metrics & Targets

Precise and immediate feedback on Mean and Peak Velocity, Mean and Peak Power, Distance, Height, Eccentrics, Position and live bar path tracing.

Set targets on key performance metrics to benchmark effort across your session.

Group Training

Add other lifters into your session for group training with up to three people. Complete regular training, pre-programmed workouts or even the 1RM prediction with your group. Training partners who complete sessions with you can collect and store their data in their own profiles once the session is done.

Training partners can be added or removed from sessions at any time.

Video Mode

Switch to video mode and record your set with synced data overlaid on the saved file. Send to friends, coaches or share online.

Handsfree start and stop. Set your device up and lift. Your video will start, stop and crop to capture the set you just completed.

Automated Workouts

Complete workouts that step you through the entire program, from exercise and weight changes to targets and rest times.

Create, Share and Download Workouts

Create custom workouts directly in the app. Let FLEX run you through your new program, or share them via our Community feature with training partners or clients using FLEX.

Looking for inspiration, download sessions from any of your connections in Community and complete them yourself. Set targets based on their results and compete and compare over the same workout.

1RM Predictions

Use the automated 1RM prediction protocol to gauge current strength and readiness levels without an actual 1RM attempt.

Multitasking

There are no limits in the FLEX app. Start regular sessions and add in training partners, or start a pre-programmed workout. Background the app and switch on your favourite tunes. Browse your historical results in the middle of your training sessions. Whatever you need is accessible any time.

Community

Create connections in the FLEX community so you can browse their training history, download sessions (complete with their results), send workouts, train in groups. View session data live as it is uploaded set by set, and interact with fist bumps and comments directly on the platform.

Store and Review

All your data is stored and reviewable in History right in your app. Data is securely backed upon our servers and retrieved on your device at any time.

User Growth & Download Statistics

App
By:
Kinetic Performance
Rating:
4.40
(8)
Version:
3.3.6 Last updated: 2026-03-13
Version code:
883040170
Creation date:
2019-06-06
Compatible devices:
Size:
82.73MB
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Apple Apps Store
Data ingested on:
2026-06-06
Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.
Developed by:
Kinetic Performance
Apple Apps Store
https://apps.apple.com/us/app/flex-stronger/id1452436164
Website:
http://flexstronger.com/

User Reviews

Love it during the set. It’s not as intuitive looking back at information. What I need for 5 starts (please make this happen!!!) 1. I need ability to input pounds and not kilos when it asks what weight I’m lifting (dumb American here) What I’d love to be able to do: 1. See all the graphs (velocity/force/work/power/bar path) more easily when reviewing results 2. If I use a tablet/laptop witha bigger screen can I see all those meters at the same
by ke*****, 2022-02-09

Great technical support. Easy to use and a great tool to help train athletes or yourself. Would highly recommend for anyone serious about training.
by Su*****, 2020-07-02
View all user reviews ›

Best FLEX Stronger Alternatives

Here are some Apple apps that are similar to FLEX Stronger: