Comparison

MoveFactorX vs FLEX Stronger

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

Head to head
About

MoveFactorX

This app provides real-time performance feedback for sports and fitness training. It utilizes velocity-based training to analyze outputs like power and velocity, offering instant rep-by-rep insights. Designed to be accessible and practical for athletes.

Highlights
  • Velocity-based training (VBT)
  • Instant rep-by-rep feedback
  • Power and velocity analysis
  • POP-100 metric
  • Budget-friendly products
Features
Read full description

Bold, clean, and straightforward performance feedback to help inform during sport and fitness training. Velocity-based training (VBT) application is now more widely available with our budget friendly, ultra-portable, and practical products MoveFactorX and Ballistic Ball. Our instant rep-by-rep feedback looks at outputs such as power, velocity, POP-100, and many more. Made in the U.S.A.

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.

Screenshots

MoveFactorX4 screens
FLEX Stronger4 screens

Verdict

The call

MoveFactorX and FLEX Stronger both sit at 4.3 stars, but that hides the real split: 71% of FLEX Stronger's written reviews are positive against 57% of MoveFactorX's. FLEX Stronger also leads on iOS requirement (12.0 vs 18.0). On price, rating, ratings volume and update cadence 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

On the App Store both sit at effectively the same score — 4.3 for MoveFactorX against 4.4 for FLEX Stronger. Both are backed by a comparable volume of ratings — 9 and 8 respectively. Written reviews are what separate them: 57% of MoveFactorX's written reviews are positive against 71% of FLEX Stronger's.

UpkeepUpdate frequency

MoveFactorX ships an update every 5 weeks, FLEX Stronger monthly. The most recent releases landed on September 24, 2026 and October 4, 2026 respectively.

Scorecard2 real differences · 8 level
MoveFactorX versus FLEX Stronger: the parameters behind the verdict, then further details
ParameterMoveFactorXFLEX Stronger
PriceFreeFree
Rating4.3 (9 ratings)4.4 (8 ratings) — better
Positive reviews57.1% of reviews71.4% of reviews — better
Number of ratings9 — better8
Update frequencyEvery 5 weeksMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS18.012.0 — better
Further details — not scored
Size51 MB83 MB
Age rating4+17+
DeveloperFIT7502 LLCKinetic Performance

Customer experience

MoveFactorX

All ratings9 ratings
Positive77.8%
Neutral11.1%
Negative11.1%
Written reviews7 reviews
Positive57.1%
Neutral14.3%
Negative28.6%

FLEX Stronger

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

In-app purchases

None

MoveFactorX

No in-app purchases

None

FLEX Stronger

No in-app purchases

Questions

Is MoveFactorX free?
MoveFactorX is free to download, with no in-app purchases.
Is FLEX Stronger free?
FLEX Stronger is free to download, with no in-app purchases.
Which has better reviews, MoveFactorX or FLEX Stronger?
FLEX Stronger is rated higher. MoveFactorX averages 4.3 out of 5 from 9 ratings, while FLEX Stronger averages 4.4 from 8 ratings.
Do MoveFactorX or FLEX Stronger have ads?
Neither MoveFactorX nor FLEX Stronger shows ads.
Which is updated more often, MoveFactorX or FLEX Stronger?
MoveFactorX ships an update every 5 weeks, and FLEX Stronger monthly. Most recently, MoveFactorX was updated on September 24, 2026 and FLEX Stronger on October 4, 2026.

Other comparisons