“Your first 2 text extractions are free” — its home page
ChargesFree plan
You are sizing up a market. These filters come from what each product claims about itself: how it positions itself, what it charges, who it names as an alternative, what proof it publishes.
“Your first 2 text extractions are free” — its home page
“2.4M stars shipped” — its home page
“PQC Encryption for the messengers you already use.” — its launch post
“Is it free? Yes. The code is open source, so the basic functionality stays available forever.” — its home page
We have not read this one closely yet. Nothing is claimed here on its behalf.