Make your next bullpen count. Live Ball-Strike calls on any outdoor field.
HeyBLU is a live, objective strike zone for youth baseball and fastpitch softball. Mount your phone, set the zone, and hear live “BALL” or “STRIKE” the moment the pitch crosses the plate. Make your next bullpen count with BLU/Big League Umpire.
No radar gun. No sensors in balls. No cell service or Wi‑Fi required. Built for any outdoor field including your backyard.
AFFORDABLE PRECISION TECH
Train command with your bullpen umpire what it costs to hire one umpire, or one pitching lesson.
Bucket Dads, Diamond Moms, Pitching Coaches and teams, track your progress with heatmap reports after every bullpen.
ESTABLISH COMMAND
Size the strike zone, hit your target, hear instant BALL or STRIKE through your iPhone, or connect a Bluetooth speaker, or earbuds.
Train to Your Zone: HeyBLU's zone is adjustable to make it more or less challenging to get strikes, or to match the zone you expect on game day.
Every Pitch Tells a Story: Heatmaps in both 2D and 3D Replays, just like the Pors. Every pitch logs plate-crossing location, pitch count, and estimated velocity.
NEW IN THIS VERSION
• Share reports straight to Instagram.
• Sharper fastpitch softball calls.
• Spreadsheet data now in feet and inches. Keep the suggestions coming — HeyBLU gets better with every bullpen
SELECT YOUR SPORT:
Baseball & plus 11-inch or 12-inch softball tracking.
Follow Live: With a 2nd iPhone or iPad fans can follow along.
COMMAND TRAINING TOOL
With a 2nd iPhone or iPad coaches or player can pick the intended location before the pitch. HeyBLU compares result to target and builds a sharable command rating report.
Earn Your Innings: Save and compare pitcher performance over time to see who hits their spots.
Solo Bullpens: Get instant audio feedback while throwing alone.
Batter’s Eye: Give hitters a consistent zone so plate discipline isn’t “close enough.”
Umpire Training: An objective reference for aspiring umpires — we empower umpires; we don’t replace them.
START YOUR 14-DAY FREE TRIAL. Not at the field yet? Download, select a reminder, and your trial doesn't begin until you're ready.
Payment will be charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless canceled at least 24 hours before the end of the current period. Manage or cancel in Account Settings. Any unused portion of a free trial is forfeited when you purchase a subscription.
Privacy Policy: https://www.heyblu.ai/privacy
Terms of Use: https://www.heyblu.ai/terms
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.
More than a baseball training app
leemjaduuuuh
I’m not a baseball expert, but after watching the demonstration and exploring the app, I could clearly see the value. HeyBLU gives players, parents, coaches, and even umpires access to real-time ball-and-strike feedback and pitch information. I especially like that it can be used during practice or games and gives everyone a more objective reference point. The app has several features, so it may take a little time for a new user to learn everything, but the guided setup helps. I think this could be a valuable tool for serious baseball and softball families.
Very effective cool app!!!
RMKCB5
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!
Absolute game changer!
WillyBCool
It is amazing how simple and effective this is! I got for my kids to track bullpen sessions and he can clearly see how many balls and strikes he’s throwing, velocity and what zone (1-9) he’s having issues hitting consistently. So worth it if your kids are in baseball. Necessity if they are in higher levels like travel ball. This little app is going to change baseball!
• Share bullpen reports straight to Instagram.
• Sharper fastpitch softball calls.
• Spreadsheet data now in feet and inches. Keep the suggestions coming — HeyBLU gets better with every bullpen
Version 1.0.7
The developer, Big League Ballpark, Inc, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
Purchases
User Content
Identifiers
Usage Data
Diagnostics
Surroundings
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
