Features:

    Superuser access prompt
    Superuser access logging
    Superuser access notifications
    Per-app notification configuration
    Temporary unroot
    Deep process detection (no more unknowns)
    Works in recovery (no more segfaulting)
    Works when Android isn't properly booted
    Works with non-standard shell locations
    Trusts ADB connection
    Always runs in ghost mode
    Wake on prompt

The Pro version additionally offers:

    OTA survival mode (no guarantees)
    Full color-coded command content logging (input/output/error)
    Per-app logging configuration
    Per-app user override
     PIN protection