Welcome to DVA FlyRocks

I like your perspective on lucid dreaming. It is certainly a way of becoming more aware of evolutionary potential.

To answer your andriod question, yes, I use my phone with an audio recorder. Lately I have also been using keywords that I record at night. The only down side I have experienced so far is that my speaking is sometimes too quiet to understand. So you have to be somewhat awake when you record, even more awake then just for pressing buttons apparently. Personally, its better than writing because I have to focus so much.

Mantras are awesome for a pre-sleep exercise. Its always good to mix it up because your mind can get used to something very quickly. Also, you can use them for just about anything dreaming related...

Anyways, glad you are here and good luck!