The app is no longer officially maintained but is available via several software repositories:

Improper adjustments in Engineer Mode can disable cellular connectivity or GPS. Where to Download

Most advanced features, such as flashing recovery or modifying IMEI, require Root privileges to function.

Features options for AppsToSD to move applications to external storage and one-click booting into Recovery or Bootloader modes.

Allows users to flash custom recovery images (like TWRP or CWM) directly from the device's SD card.