I used to rate this app 5 stars. I've been using it for years and it has become an irreplaceable part of my sleep routine. However the combination of sounds I've used for years on the free version were all moved to the locked subscription. Almost all of rain tracks, fire track and nighttime tracks have become locked after years of being accessible to people who can't afford a subscription. A very dissapointing change that is unfair to those who have relied on certain tracks for their sleep.