Improvely shows you the traffic source of every sale on your site, plus protects your PPC ads from click fraud.
It's not free. As they say after installation : "This plugin requires an Improvely account. If you do not already have an account, you can sign up for a 14-day free trial right now." And without this account it's just useless item in my admin menu.
After that is 29$per month.
Why would anybody buy this? Google analytics have it for FREE.
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