b4-app: AI Batting Partner

Name: b4-app: AI Batting Partner
Rating: 4.3 (160 reviews)
Author: KeepTossingLab

By: KeepTossingLab

EV, LA, and Biomechanics

Features & Capabilities

Introducing the b4-app: AI Batting Partner—the first AI-based baseball batting app that delivers instant advanced hitting data on iPhone 11 and later. It provides real-time biomechanics analysis, exit velocity, launch angle, bat path, and Bat Contact Point, with dynamic visualizations and slow-motion playback to refine every swing.

Developed with multiple Major League players, the app includes immersive pitch simulations, AI-generated reports, and a tiered subscription model (Starter Free, Essential, Premium, and Coach Access+). It’s designed for players and coaches seeking data-driven progress, accessible on iPhone with no extra hardware beyond a tripod.

User Growth & Download Statistics

App AI Analytics Sports Education

By:

KeepTossingLab

Rating:

4.30

(160)

Version:

2.8.0 Last updated: 2026-04-09

Version code:

884305627

Creation date:

2023-11-02

Compatible devices:

Size:

318.21MB

URLs:

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-06-12

Compare stats and ranking:

Ranking

# 128,084 ▼ 37

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

KeepTossingLab

Apple Apps Store

https://apps.apple.com/us/app/b4-app-ai-batting-partner/id1612791859

User Reviews

Users praise b4-app as a strong coaching and at-home swing analysis tool that provides real-time feedback and metrics like exit velocity, launch angle, and bat path. It's valued for coaching versatility, portable setup, and progress tracking. However, widespread concerns about reliability and accuracy persist: readings can be inconsistent or missing, with velocity numbers sometimes off; the app can crash or stop reading; sign-in issues and older iPhone compatibility also surface, along with pricing and a wish for deeper analytics. Overall, very useful but demand improvement in reliability and access.

Pros

Real-time feedback and clear swing analysis with metrics like exit velocity, launch angle, and bat path tracing.
A valuable coaching tool for players of varying ages and skill levels, helping distinguish good vs. bad swing.
Easy at-home training setup using just a smartphone and tripod.
Helpful for tracking progress over time and keeping players motivated.
Responsive support that helps resolve issues quickly.

Cons

Readings can be inconsistent or missing, and velocity measurements can be off (roughly ±15%).
Reliability issues: crashes or the app stopping readings during use.
Sign-in/login problems blocking access or sign-up failures.
Compatibility limitations with older iPhone models.
Pricing concerns and requests for deeper analytics/features.

Recent reviews

This app works really well, but every few times I swing it just gives me no reading even though it gave me readings before, also I would love to see how far I hit the ball in feet. Overall good app but could use some changes.

by Da*****, 2025-08-30

I began to use this app for my son and for some players I regularly train in private lessons (8-10yrs). At their age they may understand the concepts of how their body should move for an efficient swing, but they also may not be able to feel or tell the difference when they hit the ball with a bad swing or a good swing. They may just think “I hit it hard” even though they casted their hands out and came around the ball for example. So this tool is great as it gives real time feedback and showcases the difference between a “bad habit” swing vs a good swing we are training on. As a coach, I recommend.