This extension is a product of my laziness. You don't need to count the cards anymore.
La que mejor muestra la cantidad de Tarjetas por Lista, tanto que parece natural de Trello.
Didn't work initially but does now
Trustpilot
Q42
Alex Benoit
John DeWyze
martin.mouterde
ceegees-ext-publishers
mikespokefire
Tim
Mark Woodall
Natalie Chouinard
chuckjhardy
https://www.officialtrellocardcounter.com.br