# TheStack Baseball vs OPP Training

The clearest difference is ads: OPP Training at none against TheStack Baseball's shown. OPP Training also leads on monetization model (free vs ad-supported). TheStack Baseball's advantage is update cadence (every 2 months vs every 24 months) and ratings volume (53 vs 5). On price, rating, in-app purchases and device support 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 OPP Training. That said, the two scores are not equally well evidenced: TheStack Baseball has 53 ratings behind it against 5, so its average is the more settled of the two.

TheStack Baseball ships an update every 2 months, OPP Training every 24 months. The most recent releases landed on October 3, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | TheStack Baseball | OPP Training |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (53 ratings)](https://appshunter.io/ios/app/thestack-baseball/id6477413655/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/opp-training/id6479377811/reviews)** |
| Number of ratings | **53** | 5 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 24 months |
| Monetization | Ad-supported | **Free** |
| Size | 121 MB | 49 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [The Stack System Baseball GP, Inc.](https://appshunter.io/developer/1729294195) | [Andres Arroyo](https://appshunter.io/developer/1735814938) |

## 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


### OPP Training

[App page](https://appshunter.io/ios/app/opp-training/id6479377811)

Log your workouts, view upcoming sessions, and book appointments. Track your progress and maximize your training sessions with this comprehensive fitness companion.

**Highlights:** Log workouts, View logged workouts, See upcoming scheduled workouts, Book appointments, Track progress

**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 OPP Training free?

OPP Training is free to download, with no in-app purchases.

### Which has better reviews, TheStack Baseball or OPP Training?

OPP Training is rated higher. TheStack Baseball averages 4.9 out of 5 from 53 ratings, while OPP Training averages 5.0 from 5 ratings.

### Do TheStack Baseball or OPP Training have ads?

TheStack Baseball shows ads; OPP Training does not.

### Which is updated more often, TheStack Baseball or OPP Training?

TheStack Baseball ships an update every 2 months, and OPP Training every 24 months. Most recently, TheStack Baseball was updated on October 3, 2026 and OPP Training on October 4, 2026.

---

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