This is an add-on (Archiver) for the MiXplorer file manager and it won't be visible in your launcher. It can be uninstalled from Android or MiXplorer settings. For using this add-on, you need to install Standard or Beta version of MiXplorer file manager v6.57.6+.
The Silver version doesn't need this add-on. You can download it from here: https://play.google.com/store/apps/details?id=com.mixplorer.silver