Comparison

FLEX Stronger vs Exsurgo Performance System

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

FLEX Stronger

This app revolutionizes weight training by syncing with a sensor to provide real-time performance feedback. Track, manage, and review your training like elite athletes, with automated workouts and group training options. It offers detailed metrics, video recording with data overlay, and a community feature for sharing and downloading workouts.

Highlights
  • Real-time performance feedback
  • Velocity-based training (VBT)
  • Automated workouts
  • Group training for up to three people
  • Video recording with synced data
  • 1RM prediction
  • Workout creation and sharing
Features
Read full description

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.

About

Exsurgo Performance System

This application connects with Exsurgo Technologies devices to capture athletic performance data. Analyze your results to create effective training programs for improved athletic abilities, injury recovery, or establishing a starting baseline.

Highlights
  • Capture data from gFlight, gSprint, and gStrength devices
  • Analyze athletic performance metrics
  • Build custom training programs
  • Track progress for injury recovery
  • Establish training baselines
Features
Read full description

The Exsurgo Performance System athlete assessment application works with all the Exsurgo Technologies devices allowing you to capture data from the gFlight, gSprint and gStrength. Use this data to analyze your athletic performance and to build solid training programs to increase athletic abilities, recover from injury or get a baseline to start your training. With the Exsurgo Performance System, you can "Stop guessing and Start Assessing."

Screenshots

FLEX Stronger4 screens
Exsurgo Performance System4 screens

Verdict

The call

The clearest difference is review sentiment: FLEX Stronger at 71% against Exsurgo Performance System's 0%. FLEX Stronger also leads on update cadence (monthly vs every 3 months) and ratings volume (8 vs 1). Exsurgo Performance System's advantage is rating (5.0 vs 4.4). On price, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Exsurgo Performance System holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: FLEX Stronger has 8 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 71% of FLEX Stronger's written reviews are positive against 0% of Exsurgo Performance System's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

FLEX Stronger ships an update monthly, Exsurgo Performance System every 3 months. The most recent releases landed on August 6, 2026 and August 26, 2026 respectively.

Scorecard5 real differences · 5 level
FLEX Stronger versus Exsurgo Performance System: the parameters behind the verdict, then further details
ParameterFLEX StrongerExsurgo Performance System
PriceFreeFree
Rating4.4 (8 ratings)5.0 (1 ratings) — better
Positive reviews71.4% of reviews — better0.0% of reviews
Number of ratings8 — better1
Update frequencyMonthly — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.1
Further details — not scored
Size83 MB30 MB
Age rating17+4+
DeveloperKinetic PerformanceExsurgo Technologies, LLC

Customer experience

FLEX Stronger

All ratings8 ratings
Positive87.5%
Neutral0.0%
Negative12.5%
Written reviews7 reviews
Positive71.4%
Neutral14.3%
Negative14.3%

Exsurgo Performance System

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

FLEX Stronger

No in-app purchases

None

Exsurgo Performance System

No in-app purchases

Questions

Is FLEX Stronger free?
FLEX Stronger is free to download, with no in-app purchases.
Is Exsurgo Performance System free?
Exsurgo Performance System is free to download, with no in-app purchases.
Which has better reviews, FLEX Stronger or Exsurgo Performance System?
Exsurgo Performance System is rated higher. FLEX Stronger averages 4.4 out of 5 from 8 ratings, while Exsurgo Performance System averages 5.0 from 1 ratings.
Do FLEX Stronger or Exsurgo Performance System have ads?
Neither FLEX Stronger nor Exsurgo Performance System shows ads.
Which is updated more often, FLEX Stronger or Exsurgo Performance System?
FLEX Stronger ships an update monthly, and Exsurgo Performance System every 3 months. Most recently, FLEX Stronger was updated on August 6, 2026 and Exsurgo Performance System on August 26, 2026.

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