# PitchSim

> Sports

Canonical page: [https://chrome-stats.com/d/id6770783407](https://chrome-stats.com/d/id6770783407)

## Overview

- **ID:** `id6770783407`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** HIROSHI YASUNAGA
- **Category:** Sports
- **Version:** 2.1
- **Last updated:** 2026-08-23
- **First published:** 2026-05-29
- **Size:** 4.75 MB
- **Data as of:** 2026-09-05
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/pitchsim/id6770783407)
- **Privacy policy:** [https://pitchsim.app/privacy](https://pitchsim.app/privacy)

## Description

v2.1 — SSW (Seam-Shifted Wake) powered by physics. Realistic asymmetric aerodynamic forces from seam orientation. Fixed layout display on Mac.

PitchSim visualizes baseball pitch trajectories through physics simulation.
Without throwing a single ball, just adjust velocity, spin rate, spin axis, and gyro spin to see how 15 pitch types move in real time — from a 4-seam fastball to a knuckleball.
 
[Who It's For]
· Fans who want to understand why Darvish's slider breaks the way it does
· Pitchers and coaches who want to learn spin axis and gyro effects without a Rapsodo
· Physics enthusiasts who want to experience the Magnus effect and Seam-Shifted Wake firsthand
 
[Features]
■ 15 Pitch Presets
4-Seam Fastball, 2-Seam Fastball, Sinker, Changeup, Curveball, Slider, Gyro Slider, Cutter, Sweeper, Shoot, Splitter, Forkball, Knuckleball, SSW Demo ↘, SSW Demo ↖
 
■ 3D View (4 Angles)
Catcher, Right-Hand Batter, Left-Hand Batter, and Orbit views.
Freely rotate in Orbit mode to see the full 3D trajectory.
 
■ Parameter Control
Adjust velocity, spin rate, spin axis, and gyro spin with sliders.
Changes reflect instantly in the 3D view.
 
■ Freeze at Zone
Pause the ball exactly as it reaches the front of the strike zone.
Compare ABS (Automated Ball-Strike) and rulebook judgements side by side.
 
■ Pitch Comparison (up to 8)
Overlay multiple pitches to compare trajectories visually.
Great for understanding pitch sequencing and tunneling.
 
■ Stats Panel
Displays horizontal break, vertical break (IVB), exit velocity, and hop component — all in Statcast-compatible units (cm / inches).
 
■ 2D Views
Switch between pitcher's-eye and top-down views for horizontal break analysis.
 
[Physics Model]
Based on Alan Nathan's baseball physics model (University of Illinois).
Implements Magnus force, aerodynamic drag, gyro spin effects, and seam drag.
v2.0 adds SSW (Seam-Shifted Wake) — a physics-based model of the asymmetric wake caused by seam orientation, improving accuracy for sliders, cutters, sinkers, and other seam-sensitive pitches.
Calibrated against Statcast data.
 
[Free vs. Full Access]
Free: 6 pitches (Fastball, Curveball, Slider, SSW Demo ↘, SSW Demo ↖, Knuckleball), Catcher view only
PitchSim First (one-time purchase): All 15 pitches, 4 views, Freeze, Pitch Comparison, Stats, and SSW auto-optimization
 
Design pitches. Understand the physics. No ball required.

## Rankings

- #1,182,030 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6770783407)