Better and lighter than Captcha

I switched to CleanTalk after my free version of SweetCaptcha chose not to upgrade to WordPress 4.1.1. I figured I would start with a relatively inexpensive app and work from there. I chose CleanTalk, and it has performed wonderfully! The first thing I notice is that it is invisible to the end-user, which means they no longer have to prove that they have a heartbeat. The second thing I see is that my inbox is extremely lighter, with fewer spam emails. I was a little nervous after the first report from CleanTalk only showed 3 blocked spam emails, but the day after I installed it, I noticed the immediate effects. I am convinced that CleanTalk is the only app I will need for handling spam attacks for my website.