Why does MacKeeper keep popping up on my Mac?

MacKeeper often pops up on a Mac because it has been installed either inadvertently or with the intention of leveraging its advertised cleaning and security features. Once installed, MacKeeper frequently displays reminders and alerts as part of its design to encourage users to engage with the application, perform system scans, and address the reported issues. These pop-ups may also serve as prompts for users to upgrade to a paid subscription. Additionally, these persistent notifications are a common marketing tactic by such programs to maintain visibility and perceived necessity on the user's device. If MacKeeper is popping up unsolicited, it's possible that it was bundled with another application during its installation, which can sometimes occur without clear consent from the user.