As far as the binaural programs go, these apps are the best (I have several). But there are two problems:
1) Why cant they consolidate these blasted things so that you have ONE app with all the binaural programs you want? Make a giant one with all available sounds and charge more, or, better yet, allow in-app purchases of new collections of sounds. Total PITA to remember which one of this companys apps has the sound you want and way too much unnecessary irritation and clutter on the device. I now have an entire folder just for my Brain Wave apps and its silly. This problem isnt unique to Brain Wave, but since theirs is the best, I expect better!
2) Needs more background sounds and a greater ability to customize/blend sounds and save them. This developers entrainment is better than the ones I have on other apps. But AmbiScience, for example, is way ahead customization: Far more sounds, the ability to blend several of them (rain plus forest plus brown noise plus additional layers. Even better, they all are highly customizable, in addition to the blend of sounds, users can add intermittent thunder, the occasional bird, bursts of wind, as often as they want, for whatever duration they like. And then users can save those mini programs they have created.) Brain Wave should update to include similar offerings to truly have the strongest binaural program.
This app also should include more specific options than "morning nap" or "evening app." (Overtired nap, boost creativity nap, etc.)
Still, four stars for the much stronger and more useful entrainment, which comes in stages to better help users achieve the desired state. But they need to make a better user experience!
A. In L.A. about BrainWave Binaural Power Nap, v5.2