I cant say "this is a best app", but its really one of the best app for meditation
the features I love:
1) great soundtrack: Very relaxing and gentle. Sometimes I disable "voice" at all and I listen only relaxing music
2) there is NO binaural beats/waves!!! its REALLY GREAT! I noticed (and some of my friends too) that binaural beats/waves are more hindrance than help for meditation. Im really happy that there are no such waves -> it makes this meditation soft calm gentle!
192.169.0.1 about Meditation Oasis: Simply Being, v5.2