Since this is a Premium APK (not sourced from the Play Store), ensure your device allows "Install from Unknown Sources" (Settings > Security > Unknown Sources).
Launch the app. You must grant "Files and Media" permission (Android 13+ requires specific photo/video permissions). For SD card recovery, grant "All files access."
For a one-time "purchase" (represented by the premium APK), you get a portable data rescue lab. It is faster, deeper, and more respectful of your privacy than cloud-based competitors. While no tool can guarantee 100% recovery of 5-year-old files, for accidental deletion last Tuesday—or a corrupted SD card—this software is the closest thing to a miracle.