The phrase refers to installation files for previous iterations of the TikTok application, typically in the Android Package Kit (APK) format. These files allow users to install and run older builds of the application on their devices, potentially differing significantly in features and functionality compared to the current release. For example, individuals with older devices incompatible with the latest app version might seek out a legacy APK to continue accessing the platform.
Acquiring these files can provide continued access to the social media platform for users with hardware or software limitations. They can also allow users to circumvent undesirable updates, retain specific features, or bypass changes to the user interface they find unfavorable. Historically, obtaining such files was a common practice when updates introduced performance issues or altered core aspects of the user experience, prompting a return to a more stable or preferred build.