# TheStack Baseball vs CSP Amplify

TheStack Baseball and CSP Amplify both sit at 4.9 stars, but that hides the real split: 100% of CSP Amplify's written reviews are positive against 0% of TheStack Baseball's. CSP Amplify also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). TheStack Baseball's advantage is monetization model (ad-supported vs subscription) and ratings volume (87 vs 14). On price, rating, update cadence 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.

On the App Store both sit at effectively the same score — 4.9 for TheStack Baseball against 5.0 for CSP Amplify. That said, the two scores are not equally well evidenced: TheStack Baseball has 87 ratings behind it against 14, so its average is the more settled of the two. Written reviews are what separate them: 0% of TheStack Baseball's written reviews are positive against 100% of CSP Amplify's.

TheStack Baseball ships an update every 2 months, CSP Amplify monthly. The most recent releases landed on October 20, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | TheStack Baseball | CSP Amplify |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (87 ratings)](https://appshunter.io/ios/app/thestack-baseball/id6477413655/reviews) | **[5.0 (14 ratings)](https://appshunter.io/ios/app/csp-amplify/id6751550881/reviews)** |
| Number of ratings | **87** | 14 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | **Ad-supported** | Subscription |
| Size | 121 MB | 62 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [The Stack System Baseball GP, Inc.](https://appshunter.io/developer/1729294195) | [Cressey Training Systems, LLC](https://appshunter.io/developer/1835746183) |

## What reviewers say

### TheStack Baseball

[App page](https://appshunter.io/ios/app/thestack-baseball/id6477413655)

Enhance your baseball performance by increasing bat speed through dynamic, personalized training programs. Track your progress, connect with other players and coaches, and optimize your workouts for maximum gains. Requires a Stack Bat to begin.

**Highlights:** Dynamic training programs, Personalized speed trainer, Track speed and metrics, Connect with other players, Team monitoring for coaches, Variable inertia speed training

**Features:** macOS Compatibility

**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 TheStack Baseball free?

TheStack Baseball 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, TheStack Baseball or CSP Amplify?

CSP Amplify is rated higher. TheStack Baseball averages 4.9 out of 5 from 87 ratings, while CSP Amplify averages 5.0 from 14 ratings.

### Do TheStack Baseball or CSP Amplify have ads?

TheStack Baseball shows ads; CSP Amplify does not.

### Which is updated more often, TheStack Baseball or CSP Amplify?

TheStack Baseball ships an update every 2 months, and CSP Amplify monthly. Most recently, TheStack Baseball was updated on October 20, 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.*