# TheStack Baseball — Swing Faster. Play Better.

> Baseball bat speed training app with dynamic programs and progress tracking. (iPhone/iPad app by The Stack System Baseball GP, Inc..)

- Source: https://appshunter.io/ios/app/thestack-baseball/id6477413655 (this page in markdown: same URL + `.md`)
- Developer: [The Stack System Baseball GP, Inc.](https://appshunter.io/developer/1729294195)
- Category: Health & Fitness, Sports
- Price: Free
- Rating: 4.90/5 from 53 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 121 MB
- Languages: American English, Japanese
- Released: 2024-03-19
- Data updated: 2026-08-26
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/thestack-baseball/id6477413655/reviews.md

## What is TheStack Baseball?

Biohack your Bat Speed so that you can swing faster & play better. From the team that brought you the Award-Winning Stack System loved by over 45,000 golfers, Dr. Sasho MacKenzie has now applied his years of speed research to create the most effective way to increase your bat speed.  Players, Coaches, and Organizations across all levels of baseball can now systematically gain bat speed to hit the ball harder, farther, and have more success at the plate.

What’s Inside TheStack Baseball App:

* Dynamic Training Programs
Customized variable inertia speed training (precision overload and overspeed) - the most efficient way to increase your bat speed.  The App responds to your progress and continuously optimizes your training.  The algorithms that power dynamic programming come from years of research by leading sports scientist, Dr. Sasho MacKenzie and insights from over 25 million swings from The Stack System golf’s solution.

* Your Own Personal Speed Trainer
Be guided through scheduled workouts while tracking Stack weight, rest, recovery, and performance gains. This information allows future workouts to be adjusted behind the scenes, so your training is optimized to maximize bat speed gains.

* Track Speed, Share Metrics
Seamless connection to the Stack Sensor, which is integrated into the TheStack Bat.  Train anywhere, anytime.  Track key performance metrics such as Stack Speed, Distance Potential, Bat Speed and Grit Score. Easily share your progress and gains.

* Connect to Others
Easily connect and follow other Stackers' progress and keep each other on track with your training.  If you’re a Coach, add your whole team and monitor progress.

*** To start speed training, you will need a Stack Bat.


Terms of Use: http://www.apple.com/legal/itunes/appstore/dev/stdeula

## Key features

- Dynamic training programs
- Personalized speed trainer
- Track speed and metrics
- Connect with other players
- Team monitoring for coaches
- Variable inertia speed training

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/thestack-baseball/id6477413655/reviews.md

### 1/5 — Having issues with the app

*2026-03-18*

Having issues with the app . Contacted technical support many times, when it’s working, it’s good.

## Frequently asked questions about TheStack Baseball

### Does TheStack Baseball have ads?

Yes, TheStack Baseball contains advertisements. This is common for free applications that offer advanced features and content.

### What is the rating for TheStack Baseball?

TheStack Baseball has an excellent rating of 4.9 stars based on 53 user reviews, indicating high user satisfaction.

### What devices does TheStack Baseball support?

TheStack Baseball is available on iPhone and iPod devices, offering a mobile training solution for athletes on the go.

### What is the age rating for TheStack Baseball?

TheStack Baseball is rated 4+ by Apple, making it suitable for users of all ages interested in improving their baseball performance.

### How often is TheStack Baseball updated?

TheStack Baseball was last updated on March 11, 2026, with version 1.2.3. This suggests a consistent update schedule to improve the app.

### What is the price of TheStack Baseball?

TheStack Baseball is available for free download. While the app is free, it does contain advertisements.

### What is the core training method used in TheStack Baseball?

The app utilizes dynamic training programs with customized variable inertia speed training, including precision overload and overspeed techniques, to efficiently increase bat speed.

### Can coaches use TheStack Baseball to monitor their team?

Yes, coaches can add their entire team to the app and monitor individual player progress and training metrics, facilitating team-wide development.

## Version history (last 5 releases)

### 1.2.3 — 2026-03-11

Various enhancements for Speed Training and Stack Sensor

### 1.2.2 — 2026-01-28

General Improvements
* Miscellaneous enhancements and fixes

### 1.2.1 — 2025-08-12

Speed Training Scheduling Module
 * Quickly schedule your next session right after completing a workout.
 * Stay on track with a clear visual display of your 100% Grit Training Window dates.
 * Auto-sync your scheduled sessions directly to your Calendar.
 * Build momentum with the new Habit Stacking feature.

General Improvements
 * Stack Radar fixes
 * Organization coaches can now see other coaches’ local player profiles
 * Miscellaneous fixes and improvements

### 1.1.3 — 2025-07-30

Speed Training Scheduling Module
 * Quickly schedule your next session right after completing a workout.
 * Stay on track with a clear visual display of your 100% Grit Training Window dates.
 * Auto-sync your scheduled sessions directly to your Calendar.
 * Build momentum with the new Habit Stacking feature.

General Improvements
 * Organization coaches can now see other coaches’ local player profiles
 * Miscellaneous fixes and improvements

### 1.1.2 — 2025-01-08

* minor improvements and fixes

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*