Moom is THE BEST! I have tried a bunch of window placement applications, and Moom simply just works. Having said that, buying from the MAS is becoming more and more difficult, as developers are literally “boxed” in by “Sandboxing” rules, disallowing them to add features that one would get if one purchased direct. I see the MAS going by the wayside if this continues. It’s unfortunate really. I recommend this app whole heartedly, but if you want to receive future updates for your applications, start buying direct or you will not. This goes not just for Moom but for all apps, because after doing some research, I have found that most of my apps are in fact, outdated compared to the version if I had bought direct. Back to Moom, well, it has a bit of a learning curve, but the developer has great video tutorial support on the website, so once you set it up just the way you like it, it works like a dream. The developer is responsive and very good, and has other apps that are well built. I give this a ten star rating. Get it, you will not be dissapointed!