My guess is that the price is lowered as the developer is indisposed for a indefinite time and so can not support the application. It seems that some people have problems with the microphone input for example but would say that even if there is some things that do not work properly it is totally worth it as even a fifth of what the app can do is worth much more.
Google Play:
https://play.google.com/store/apps/details?id=com.jasuto.droid&hl=en