Erev_estimator is a software for PC with which the user can change the value of any parameter affecting Erev_ANT and/or Erev_ATPase, and observe how are the A (green), B (orange), C (grey) and D (brown) spaces altered. Below you can see a screenshot of the software.
Erev_estimator can be obtained from here: Erev_estimator with instructions that contains the Erev_estimator.exe file, the comctl32.ocx file (you will need to place this file in your system directory, see Instructions pdf for this) and the Instructions for using Erev_estimator.pdf.
For a shiny app version (written in R, thank you David Bui), see: https://chinopoulos.shinyapps.io/Erev_estimator/