Equivalencia de hélices is a free Android app developed by Antonio Ortiz, designed to assist aeromodellers in determining equivalent propellers based on the diameter and number of blades. With just a few simple adjustments, this app can calculate the equivalent measurements for all other propellers. To perform the calculations, users are required to fix either the diameter or pitch as per their requirement.

This app is incredibly easy to use and provides valuable information for aeromodellers who need to determine propeller equivalence. The app's simple interface and user-friendly design make it accessible to all, regardless of their technical expertise. Overall, Equivalencia de hélices is a useful tool for aeromodellers looking for a quick and easy way to determine equivalent propeller measurements.