What is you favorite app you use for LD?

My top 3
1- Binaural Beats, just the first hour of my sleep
2. iBrainwave, same as Binaural Beats, sometimes I use this one.
3. Relax alarm, very easy way to wake up.

I'm not using any apps yet for remembering to RC, but I think I will set my alarm silent every hour.

Any suggestions to use my Iphone for LD ?