Voice activated offline voice recorder Sometimes while driving or washing the dishes some idea pops up in my head while I am listening to music.

How may I record voice without touching the phone?

(Sometimes while driving in remote places I do not have Internet connection so it needs to work offline)
Have a look at this : Text by Voice. It says that :

This app makes texting a totally hands-free experience. With it you can send and listen to messages without so much as touching your phone. It's entirely voice-powered.

Hope it will help.