TheStack Baseball
The Stack System Baseball GP, Inc. Health & Fitness iPhoneiPadiPod touch
TheStack Baseball is a free Health & Fitness app for iPhone and iPad by The Stack System Baseball GP, Inc. Rated 4.9/5 from 87 ratings. Requires iOS 15.0.
- Rating
- 4.9
- 87 ratings
- Price
- Free
- on the App Store
- Size
- 121 MB
- Age 4+
- Updated
- Mar 11
- 2026 · v1.2.3
Screenshots
About 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
Ratings & reviews
4.9
87 ratings
What’s new
Version 1.2.3 · Updated March 11, 2026
Various enhancements for Speed Training and Stack Sensor
App privacy
The developer, The Stack System Baseball GP, Inc., reported these privacy practices to Apple.
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Contact Info: Name, Email Address, Phone Number
- Identifiers: User ID, Device ID
- Health & Fitness: Fitness
- Usage Data: Product Interaction
- Diagnostics: Crash Data, Performance Data
- User Content: Photos or Videos
Used for: Developer’s Advertising or Marketing, Analytics, Product Personalization, App Functionality
Alternatives to TheStack Baseball
Looking for apps like TheStack Baseball? Here are 6 similar apps on the App Store. The highest rated is EPT Athlete (5.0/5), and all 6 are free to download.
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Baseball Flows
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The Stack System
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FYTT
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FlexPro Grip
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EPT Athlete
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NSF Certified for Sport®
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| TheStack Baseball | 4.9 / 5 (87 ratings) | Free | March 11, 2026 | |
| Baseball Flows | 4.6 / 5 (21) | Free | Sep 10, 2026 | Compare |
| The Stack System | 4.9 / 5 (7,046) | Free | Oct 16, 2026 | Compare |
| FYTT | 4.5 / 5 (13) | Free | Dec 4, 2025 | Compare |
| FlexPro Grip | 4.1 / 5 (27) | Free | Oct 6, 2026 | Compare |
| EPT Athlete | 5.0 / 5 (5) | Free | Aug 19, 2025 | Compare |
| NSF Certified for Sport® | 3.7 / 5 (33) | Free | Nov 21, 2025 | Compare |
Compare TheStack Baseball with the top alternatives: ratings, updates, ASO score and keyword gaps →