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Apple
Ratings
79
Rating
4.8 · 79 ratings
Version
1.2.3
Last updated 03/11/2026

#125,712 of 719,896 by ratings on Apple · #7,254 of 50,597 in Health & Fitness

First seen by this census 09/05/2026 — the store does not publish a creation date

Last updated 03/11/2026

Tracked since 09/05/2026

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Category: Health & Fitness

Description

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

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Growth

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History

Tracking since 09/05/2026. History accumulates as changes are observed — check back soon.