TheStack Baseball
TheStack is baseball’s most effective bat speed training system — and the numbers back it up.
We've tracked over 500,000 swings from our dedicated players, and so far, Stackers who have completed at least 1 program have gained an average of 4.5 MPH of bat speed.
TheStack Bat
Add TheStack Bat for the baseball or softball player in your home.
Baseball + Golf Bundle
One system for the whole family. Golf speed training for parents — bat speed training for your baseball or softball player. Each with their own programs in the app.
Dynamic Training Programs
Customized variable inertia speed training - the most efficient way to increase your bat speed. The algorithms that power the dynamic programming come from years of research by leading sports scientist, Dr. Sasho MacKenzie.
Your 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.
Tracking & Sharing Metrics
Track key performance metrics such as Stack Speed, Distance Potential, Bat Speed and Grit Score. Easily share your progress and gains.
Trusted by the Best in Baseball
Big league teams know that bat speed matters. That's why Stack Baseball is trusted by 20+ pro organizations.
The data is clear that faster bat speeds lead to better contact, more hits, and more homers. Start building real speed with TheStack today.