# FlexPro Grip vs CSP Amplify

The clearest difference is rating: CSP Amplify at 5.0 against FlexPro Grip's 4.1. CSP Amplify also leads on review sentiment (100% vs 67%) and iOS requirement (13.0 vs 15.1). FlexPro Grip's advantage is monetization model (free vs subscription) and update cadence (weekly vs monthly). On price, ratings volume, 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.

CSP Amplify holds the better App Store score, 5.0 against 4.1. Both are backed by a comparable volume of ratings — 27 and 14 respectively. Written reviews point the same way: 67% of FlexPro Grip's written reviews are positive against 100% of CSP Amplify's.

FlexPro Grip ships an update weekly, CSP Amplify monthly. The most recent releases landed on October 12, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | FlexPro Grip | CSP Amplify |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (27 ratings)](https://appshunter.io/ios/app/flexpro-grip/id1630738994/reviews) | **[5.0 (14 ratings)](https://appshunter.io/ios/app/csp-amplify/id6751550881/reviews)** |
| Number of ratings | **27** | 14 |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Monthly |
| Monetization | **Free** | Subscription |
| Size | 93 MB | 62 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [FlexProGrip](https://appshunter.io/developer/1596885871) | [Cressey Training Systems, LLC](https://appshunter.io/developer/1835746183) |

## What reviewers say

### 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


### CSP Amplify

[App page](https://appshunter.io/ios/app/csp-amplify/id6751550881)

Access expert-designed exercises and personalized training programs trusted by professional athletes. Features hundreds of professionally filmed demonstrations, clear technique instructions, and progress tracking to help you maximize your performance. Optimized for serious athletes and fitness enthusiasts.

**Highlights:** Expert exercise library with hundreds of demonstrations, Personalized training recommendations, Progress tracking and workout history, Curated workout programs, Offline video playback, Dark mode support

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is FlexPro Grip free?

FlexPro Grip is free to download, with no in-app purchases.

### Is CSP Amplify free?

CSP Amplify is free to download, with no in-app purchases.

### Which has better reviews, FlexPro Grip or CSP Amplify?

CSP Amplify is rated higher. FlexPro Grip averages 4.1 out of 5 from 27 ratings, while CSP Amplify averages 5.0 from 14 ratings.

### Do FlexPro Grip or CSP Amplify have ads?

Neither FlexPro Grip nor CSP Amplify shows ads.

### Which is updated more often, FlexPro Grip or CSP Amplify?

FlexPro Grip ships an update weekly, and CSP Amplify monthly. Most recently, FlexPro Grip was updated on October 12, 2026 and CSP Amplify on October 2, 2026.

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