CrashMatrix Pro

iPhone / Utilitaires

CrashMatrix Pro puts the power of advanced collision analysis in your pocket. Built by a veteran law enforcement professional with 35+ years of experience, this app delivers 37+ industry-standard calculators used in traffic crash reconstruction.

SPEED ANALYSIS

Speed from Skid Marks
Slide to Stop
Combined Speed
Critical Speed Yaw
Vault / Flip
Speed from Fall
Multi-Surface Speed
INTERMEDIATE TOOLS

Time & Distance
Perception-Reaction Distance
Stopping Distance
Acceleration / Deceleration
Grade Adjustment
Drag Factor
Kinetic Energy
ADVANCED ANALYSIS

Momentum (Inline & 360 Vector)
Delta-V
Crush Energy
Coefficient of Restitution
Law of Cosines
Closing Speed
RECONSTRUCTION SPECIALTIES

Motorcycle Slide
Rider Vault
Wheelbase Reduction
Truck/Trailer Momentum
Trailer Braking
Rollover Speed
Pedestrian Speed
Bicycle Speed
And more
ADDITIONAL FEATURES

Complete Formula Reference Cards with worked examples
Unit Converter (Feet/Inches, MPH/FPS)
Imperial and Metric toggle on every calculator
Step-by-step completed formulas shown with every calculation
Common drag factor and braking efficiency reference tables
Works 100% offline — no internet required
Designed for law enforcement officers, accident reconstructionist, insurance investigators, and forensic engineers who need accurate, reliable calculations in the field.

One-time purchase. No subscriptions. No ads. No data collection.

Quoi de neuf dans la dernière version ?

NEW: Interactive Diagrams for 16 More Calculators
Tap-to-enlarge SVG diagrams now appear in 28+ calculators, showing you exactly what to measure at the scene:

Skid Speed & Slide to Stop — see the vehicle and skid marks with distance labels
Yaw Mark Speed & Radius of Curve — chord, middle ordinate, and radius clearly illustrated
Stopping Distance — color-coded timeline showing P/R and braking phases
Air Brake Lag — four-phase timeline: P/R, lag, braking, and stop
Grade Adjustment — vehicle on a slope with gravity component arrows
Momentum (Inline) — before and after collision with speed arrows
Crush Energy — front view with C1-C6 measurement points across the damage
PDOF Correction — top-down view showing force angle from centerline
Motorcycle Slide — motorcycle on its side with slide distance
Night Visibility — headlight beam range vs. stopping distance comparison
Rollover Speed — vehicle cross-section with track width and center of gravity
Rider Vault — airborne arc plus ground slide phases
MC Lean Angle — motorcycle leaning into a curve with angle labeled
Grade Crossing — top-down railroad tracks and road intersection
NEW: Built-In User Manual
A comprehensive guide accessible right from the home screen. Covers all calculator categories, how to use every feature, field tips, and privacy information — written in plain language for officers of all experience levels.

NEW: 3 Brake Skid Test Calculator
Average drag factors from three test skids at a known speed. Shows individual results plus high, low, and range with warnings for inconsistent tests.

NEW: Crash Math Academy Link
Quick access to the companion app directly from the home screen footer.

All diagrams are completely original illustrations — no external imagery. Every calculation still runs 100% offline on your device.