Not free, money is stolen.
Looks like a free audio cleaner at first. I used it a couple of times and then it started to ask me for "tokens" to be able to process more files. You can get 10 tokens daily for free so I did use those, but that's when things go very wrong. I uploaded the file but, when the site is processing it to clean it, it always goes wrong half the way and you need to restart all together but your tokens are gone for good. At this point I decided to purchase tokens as a pay as you go option, as I just needed to use it once. Money gone. Full on scam. You use your paid tokens to process the files and it will happen the same, it fails half the way and your money is gone. After several tries, I got the file processed but it was not what I chose to get clean, so you get the wrong results. I got hope as I got and email with the links for the results but the links don't work. Don't waist your money!