FLEX Stronger3.5.3 - App Store

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.

Version History - Updated the descriptions for each metric. 3.5.3 17h ago • Added support for the new Dip metric.
• The Exercise Library now opens with your Most Used exercises before the full list, making it quicker to find your favourites.
• Fixed a crash and made general stability improvements. 3.5.1 Aug 2 • A new, simpler metric selector makes it easier to switch between metrics during training and review.
• Next Set Preview Alerts now show target information for non-velocity targets.
• General improvements for a smoother training experience. 3.5.0 Jul 26 - Minor bug fixes. 3.4.1 Jul 6 You asked, and we listened. Set targets your way, and train in peace when you need to.
• New Target Modes
– Threshold: a single target value
– Range: a min and max band
– Fatigue: a % drop from your best
– Set a target for any metric, not just velocity
• New Training Settings
– Silent Mode mutes voice, chimes and alerts 3.4.0 Jun 22 - Improvements based on customer feedback.
- Bug fixes and stability improvements. 3.3.6 Mar 13 - Increased the default inactivity disconnect timeout from 15 mins to 30 mins
- Faster and more reliable Bluetooth Connection
- Fixed some crashes 3.3.5 Jan 23 - Happy New Year
- Improved French translation
- Fixed some bugs 3.3.4 Jan 7 - Fixed some bugs. 3.3.3 11/14/2025 - Updated the Japanese translation. 3.3.2 11/05/2025 - Added multiple language support
- 1RM Test velocity targets are now adjusted based on MVT
- New feature - history filtered by exercise 3.3.1 11/03/2025 - Smart Multi-Connection: Connect multiple devices at once, including GymAware RS, FLEX, and ANCORE Data Plate. The app automatically selects the best device for each exercise, athlete, or bar weight. You can still switch manually anytime.

- ANCORE Data Plate Support: Full compatibility with ANCORE devices, now including cable-based exercises.

- Performance & Stability: General improvements and bug fixes for a smoother training experience. 3.2.0 10/01/2025 • Multi-Connection Support – Connect multiple sensors at once for seamless training across stations. No more disconnecting and reconnecting when switching exercises.

• Ancore Data Plate Support – Added full compatibility with the Ancore Data Plate device, including exercise filtering and automatic device selection.

• Bug fixes and performance improvements to make your training experience smoother. 3.0.1 08/31/2025 - Fixed the incorrect peak power value when used with a GymAware. 2.1.13 01/06/2025 - Fixed a crash error 2.1.12 10/11/2024 General stability and performance enhancements.
Fixed a few corner case bugs. 2.1.11 10/01/2024 - Fixed some bugs 2.1.7 06/04/2024 In this version, you should notice that you are spending less time waiting around for things to happen. We’ve improved the login process, and reduced time to load the exercise list and video list screens.

We also fixed a problem that caused a session edits not to be saved. 2.1.6 03/03/2024 Fixed an error displaying some Jump exercises 2.1.5 02/09/2024 Improved the rep detection process, allowing more movements to be counted as reps.

Fixed a scenario that could cause FLEX devices to disconnect while using the app. 2.1.4 01/10/2024 Improved the way that exercise detection works, you should now see better matches to your trained exercises.

The rep detection algorithm has been improved to allow better matches to certain classes of exercise. You should see an improvement in the detection of Jump related exercises. 2.1.3 08/16/2023 - Better support for different locales
- Fixed some bugs 2.1.2 03/21/2023 Train FLEX and your muscles at the same time!
Now you can enable automatic exercise detection by teaching your FLEX how you lift.
Once FLEX has LEARNED your individual movement pattern EXERCISE ASSIST automatically detects the exercise you are performing.
Use this to automatically correct your exercise type should you forget to change exercise.
EXERCISE ASSIST also improves measurement quality as once your movements are "Trained" FLEX is much better at rejecting noise and ghost reps.
New icons inform you of which exercises types are in LEARNING MODE, UNTRAINED and TRAINED.
Under the SETTINGS menu there is a new option EXERCISE ASSIST.
Have FUN and train SMART! 2.1.1 03/15/2023 - Fixed some small bugs
- Improved performance 2.0.2 01/29/2023 You asked, and we listened. This FLEX release has something for everyone.

• Slow, maximal, grindy reps are better detected
• New realtime metrics
- Eccentric peak & means
- Eccentric / Concentric time
• Eccentric count timer 2.0.1 01/11/2023