No, it's not a virus. No, you shouldn't download it. You don't need "cleaner" or "maintenance" apps to keep your Mac running well, and some of these apps can do more harm than good. Some remove files/folders or unused languages or architectures, which does nothing more than free up some drive space, with the risk of deleting something important in the process.hi
i am new to macs and have recently purchased a pro. when i go on the internet a mackeeper window always opens saying that i should download it as it will keep my mac safe. should i download it or is it a virus or trojan.