A script for exporting whatsapp contacts from groups, is a good digital product?

Hi guys, I developed a script for exporting phone numbers from whatsapp groups, here in Brazil a lot of digital marketers use the approach of creating a whatsapp group with contents, then export the contacts to create a custom audience on facebook or google to do remarketing strategies...

I have this script: https://whatsapp-exportar-contatos.com.br/

And I'm thinking about create this same sales page, but in English, do you think this script can be usefull?

Thanks so much!