Yea, I don't think you can access any dealer settings with anything that cheap.
Any ELM bluetooth dongle (I've bought a couple for ~$15) and an android app can do a lot of diagnostics. ActiveOBD is a subaru-specific app that can read transmission temperature, AWD %, and more on the newer models (was invaluable when diagnosing a torque converter solenoid on my mom's 2012 CVT Impreza).