£40 a year for an every now and again use
I’ll get my pen out first

This app provides essential formulas for traffic accident reconstruction, accessible on your mobile device. It offers calculations for drag factors, speed, kinetic energy, and more, with both US and Metric units. Save your results directly on your phone, eliminating the need to return to the office.
2.1
March 6, 2021
Updates minor issues with formula pages in a few imperial and metric formulas. Makes it compatible with newer version of Apple operating systems and iPads
MoreTraffic Crash Reconstruction Formulas
Crash Calc is a subscription-based mobile application designed to provide users with commonly used formulas for traffic accident reconstruction. It allows for calculations in both US (Imperial) and Metric measurements directly on a smartphone or tablet.
Crash Calc offers two subscription plans: $3.99 per month or $39.99 per year. Both plans include a 14-day free trial period. Pricing may vary by country.
Yes, you can cancel your subscription online at any time without any cancellation fees. The cancellation will take effect at the end of your current monthly or annual billing cycle.
Crash Calc includes formulas for Drag Factors, Speed, Time-Distance-Velocity, Kinetic Energy, Center-of-Mass, Radius, Critical Speed, Roll-Over, Airborne calculations, and a Miscellaneous section with Pedestrian, Motorcycle, and Swerve to Avoid formulas.
Yes, Crash Calc features a Slope Indicator that allows users to place their phone on the roadway in the direction of travel to instantly read the slope.
Crash Calc is available for use on iPhones, iPads, and iPods. Your subscription can be used on any device registered with your Apple account.
The latest version of Crash Calc is 2.1, which was last updated on March 6, 2021. Information on update frequency beyond this is not provided.
Crash Calc has an age rating of 4+, making it suitable for a wide range of users.