HeyBLU: Baseball Strike Zone

HeyBLU: Baseball Strike Zone

Objective player development

14 ratings
8 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • July 16, 2026
  • July 28, 2026
HeyBLU: Baseball Strike Zone video #1 for iPhone
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About

This app transforms your iPhone into an objective strike zone for youth baseball and softball. It provides live audio calls for balls and strikes, tracks pitch data, and helps develop pitcher command and batter's eye.

Live audio ball/strike calls
Adjustable strike zone
Pitch heatmaps and logs
Estimated velocity tracking
Command effectiveness rating
Pitcher performance tracking
Batter's eye development tool
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What's New in HeyBLU

1.0.3

July 28, 2026

Fastpitch Softball feedback fixes. Now with all mound distances by age group starting at 8U up to College distances. Command training (need a 2nd device) now has softball specific pitch types including Rise and Drop balls. We also added Sinker (SI) to the baseball version of the Command trainer.

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Subscription plans

Pro Monthly

Monthly access to HeyBLU Pro features.

$4.991 Month
14 Days trial
How to cancel HeyBLU subscription ⁉️

User reviews

BLU Bestie

Used BLU with a couple college players throwing a bullpen session. 5 minute set up and when BLU called the first few pitches in a row.. these college athletes lost their collective minds….🤯⚾️🙌”

Very effective cool app!!!

I tried the Hey Blu app in the batting cage and pitching sessions using both baseballs and softball and also used the app during my softball games. Found the setup is very easy to do following the on screen prompts and the app works great calling balls and strikes and keeping track of the number of pitches and pitch location. Very cool app and highly recommend it for coaches, players and parents!
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Very cool app

Just used it with my two sons. Once we set it up, it worked perfectly. After the session, each had the hard data of exactly where each pitch crossed the plate. We used it with a Bluetooth speaker and it was really fun to hear the loud STRIKE! calls. Will definitely be telling my other baseball dads about this.
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Total game changer.

I’ve never known enough about baseball to call balls and strikes myself, so backyard practice was always tricky. Now with HeyBLU, the kids run their own games, or my son and I can actually work on his pitching together, without second guessing the strike zone. It’s been great to be part of his improvement in this way. I can pull up stats afterward and actually talk about them with his coaches, instead of just nodding along. Total game changer, for everyone.
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Cool app!!!

Went through the set up process step-by-step, put it in the tripod and it worked right away. Great to get real time feedback and then a summary of the session at end. Still exploring the other features. Fun app!!!

FAQ

What is HeyBLU?

HeyBLU is a player development platform that uses your iPhone to provide objective strike zone calls and pitch data for baseball and softball. It aims to improve pitcher command and batter's eye without expensive equipment.

How does HeyBLU work?

You mount your iPhone, set the strike zone, and the app provides live audio "BALL" or "STRIKE" calls as pitches cross the plate. It also tracks pitch locations, counts, and estimated velocities.

Can I use HeyBLU offline?

Yes, HeyBLU is built for the dirt field and works anywhere, requiring no cell service or Wi-Fi. This makes it ideal for practices and games in various locations.

What are the subscription options for HeyBLU?

HeyBLU offers a 14-day free trial. After the trial, it costs $4.99 per month or $49.99 per year in the U.S., unlocking unlimited profiles, heatmaps, reports, and data exports.

How does HeyBLU help with umpire training?

It serves as an objective reference tool for aspiring umpires to train their eyes and evaluate their calls against the app's consistent strike zone.

What devices does HeyBLU support?

HeyBLU is supported on iPhone and iPad devices. It is designed for iOS users looking to enhance baseball and softball development.

How often is HeyBLU updated?

The latest version is 1.0.1, released on July 18, 2026. Updates are provided regularly to improve functionality and add new features based on user feedback.

Can coaches or parents view pitches remotely with HeyBLU?

Yes, you can share a live, read-only feed to a second device. This allows coaches or parents to track pitch locations directly from the dugout or stands.