For me, the 20 second delay works perfectly and it cut down my usage of social media by a lot (At least on the desktop). I also love the little messages appearing while you wait, reminding you to stretch or put one thing away for example. The settings page is easy to understand and has some cool features. What I like a lot is that right at the top there's a setting to mostly turn all extra features off, so if you don't want to go into the itty-bitty customization then you don't have to.