# FLEX Stronger vs FlexPro Grip

The clearest difference is rating: FLEX Stronger at 4.4 against FlexPro Grip's 4.1. FLEX Stronger also leads on iOS requirement (12.0 vs 15.1). FlexPro Grip's advantage is update cadence (weekly vs monthly) and ratings volume (27 vs 8). On price, review sentiment, ads and in-app purchases there is nothing between them.

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

FLEX Stronger holds the better App Store score, 4.4 against 4.1. Both are backed by a comparable volume of ratings — 8 and 27 respectively. Written reviews point the same way: 71% of FLEX Stronger's written reviews are positive against 67% of FlexPro Grip's.

FLEX Stronger ships an update monthly, FlexPro Grip weekly. The most recent releases landed on October 4, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | FLEX Stronger | FlexPro Grip |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (8 ratings)](https://appshunter.io/ios/app/flex-stronger/id1452436164/reviews)** | [4.1 (27 ratings)](https://appshunter.io/ios/app/flexpro-grip/id1630738994/reviews) |
| Number of ratings | 8 | **27** |
| Positive reviews | **71.4% of reviews** | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | Free | Free |
| Size | 83 MB | 93 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Kinetic Performance](https://appshunter.io/developer/343232407) | [FlexProGrip](https://appshunter.io/developer/1596885871) |

## What reviewers say

### FLEX Stronger

[App page](https://appshunter.io/ios/app/flex-stronger/id1452436164)

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:** macOS Compatibility

**In-app purchases:** none


### FlexPro Grip

[App page](https://appshunter.io/ios/app/flexpro-grip/id1630738994)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is FLEX Stronger free?

FLEX Stronger 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, FLEX Stronger or FlexPro Grip?

FLEX Stronger is rated higher. FLEX Stronger averages 4.4 out of 5 from 8 ratings, while FlexPro Grip averages 4.1 from 27 ratings.

### Do FLEX Stronger or FlexPro Grip have ads?

Neither FLEX Stronger nor FlexPro Grip shows ads.

### Which is updated more often, FLEX Stronger or FlexPro Grip?

FLEX Stronger ships an update monthly, and FlexPro Grip weekly. Most recently, FLEX Stronger was updated on October 4, 2026 and FlexPro Grip on October 12, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*