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 v6.67.0+.

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

Supported formats:

Packing/unpacking: 7z XZ BZIP2 GZIP TAR ZIPX WIM Lizard LZ4 LZ5 Zstandard.

Unpacking only: AR ARJ CAB CHM CPIO CramFS DMG EXT FAT GPT HFS IHEX ISO LZH LZMA MBR MSI NSIS NTFS QCOW2 RAR RPM SquashFS UDF UEFI VDI VHD VMDK XAR and Z.