ABSline
Judge the call
Free · Designed for iPad. Not verified for macOS.
Judge the call. Challenge the umpire. Trust your eyes.
ABS Challenge turns baseball's Automated Ball-Strike system into a game of judgment.
Watch each pitch from a broadcast-style home-plate view, then decide: was the umpire's call right? If you think it's wrong, double-tap to challenge. An ABS-style replay zooms into a 3D strike zone and measures the ball's distance from the edge in inches — confirming or overturning the call.
• Pitch it yourself — flick to throw, re-grip the seams to pick the pitch type
• Track real velocity (mph) and spin (rpm) on the stadium board
• 9 innings, 27 outs — read it right or take an out
• Game Center leaderboards: Top Speed, Top Spin, Best Score, Best Accuracy
• Name the two teams and pick their colors
• No ads, no tracking, no accounts — just baseball
Trust your eyes. Make the call.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Takayuki Hamuro, 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 Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Takayuki Hamuro
- Size
- 37.1 MB
- Category
- Sports
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- Copyright
- © 2026 Takanori Hamuro
