Comparison

Proteus Motion vs FlexPro Grip

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

Head to head
About

Proteus Motion

This app provides advanced performance training and recovery analytics. It enables low-impact, high-efficiency 3D resistance training. A Proteus System user account is required to use the app.

Highlights
  • Performance training analytics
  • Recovery analytics
  • 3D resistance training
  • High efficiency training
  • Low-impact training
Features
Read full description

Proteus Motion is leading the reinvention of performance training and recovery. The Proteus System delivers breakthrough analytics and first-ever 3D resistance training for high efficiency, low-impact training. NOTE: This app requires an active user account with the Proteus System.

About

FlexPro Grip

This app works with a specialized device to create customized training programs for baseball pitchers. It measures baseline strength and endurance to improve pitching performance, reduce injury risk, and accelerate recovery. Track your progress with saved workout history.

Highlights
  • Customized training protocols
  • Strength, endurance, and RPD testing
  • Objective data measurements
  • Injury risk reduction
  • Performance enhancement
  • Workout history tracking
Features
Read full description

OVERVIEW: The FlexPro Grip app is to be used along with the FlexPro Grip device. Designed primarily for baseball pitchers, the FlexPro Grip app provides customized training protocols to be performed on the FlexPro Grip device to improve the strength, endurance and explosiveness of the muscles and tendons from your fingertips through your elbow that most impact pitching performance. There is no guesswork. All data measurements are objective. The result: reduce the chance of tearing your UCL improve your spin rate increase your pitch movement throw harder enhance your command last longer in games recover faster after you throw accelerate your rehab if you are recovering from a UCL injury / forearm strain HOW APP WORKS: The app first guides you through a Strength, Endurance, and / or Rate of Force Development test to measure your baseline levels. Then, the app prescribes you with customized training protocols that specify the amount of force to apply, hold times, and the number of sets, reps, exercises to perform to help you make rapid gains in both your health and pitching performance. All workouts are saved to your History so you can track your progress at any time. NO MEDICAL ADVICE: The protocols are intended to provide recommendations but do not constitute medical advice. As with any form of sports or physical training, seek professional medical advice prior to initiating use.

Screenshots

Proteus Motion4 screens
FlexPro Grip3 screens

Verdict

The call

The clearest difference is review sentiment: FlexPro Grip at 67% against Proteus Motion's 0%. FlexPro Grip also leads on rating (4.1 vs 3.0) and update cadence (weekly vs every 6 months). 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

FlexPro Grip holds the better App Store score, 4.1 against 3.0. That said, the two scores are not equally well evidenced: FlexPro Grip has 26 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of Proteus Motion's written reviews are positive against 67% of FlexPro Grip's.

UpkeepUpdate frequency

Proteus Motion ships an update every 6 months, FlexPro Grip weekly. Both last shipped on September 10, 2026.

Scorecard4 real differences · 6 level
Proteus Motion versus FlexPro Grip: the parameters behind the verdict, then further details
ParameterProteus MotionFlexPro Grip
PriceFreeFree
Rating3.0 (2 ratings)4.1 (26 ratings) — better
Positive reviews0.0% of reviews66.7% of reviews — better
Number of ratings226 — better
Update frequencyEvery 6 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.115.1
Further details — not scored
Size38 MB93 MB
Age rating4+4+
DeveloperProteus Motion Inc.FlexProGrip

Customer experience

Proteus Motion

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

FlexPro Grip

All ratings26 ratings
Positive76.9%
Neutral0.0%
Negative23.1%
Written reviews9 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

In-app purchases

None

Proteus Motion

No in-app purchases

None

FlexPro Grip

No in-app purchases

Questions

Is Proteus Motion free?
Proteus Motion is free to download, with no in-app purchases.
Is FlexPro Grip free?
FlexPro Grip is free to download, with no in-app purchases.
Which has better reviews, Proteus Motion or FlexPro Grip?
FlexPro Grip is rated higher. Proteus Motion averages 3.0 out of 5 from 2 ratings, while FlexPro Grip averages 4.1 from 26 ratings.
Do Proteus Motion or FlexPro Grip have ads?
Neither Proteus Motion nor FlexPro Grip shows ads.
Which is updated more often, Proteus Motion or FlexPro Grip?
Proteus Motion ships an update every 6 months, and FlexPro Grip weekly. Most recently, Proteus Motion was updated on September 10, 2026 and FlexPro Grip on September 10, 2026.

Other comparisons