Does exactly what it should
Move SMS directly to spam folder based on a simple blacklist. Everything happens on the phone, no messages are forwarded to a server (as far as I understand). Simple but effective- exactly what I was looking for to deal with spam SMS sent without a number, where I was not able to filter them with iOS standard tools. Now I add blocked company names or blocked words to the list and the SMS go straight into spam. Thanks for this useful piece of software!