Ok, I downloaded the free version and tried it in LUNA (DAW). The TL;DR version: I'll keep it around and listen for new versions, but don't find it useful in its present form. After installing, you add it as a plugin on a track (I added it to a stereo reference track). Next, you draw a 2D representation of your room and run an analysis ("generate acoustics"). The act of documenting your room makes you think, and that's always valuable. However, as you add "absorb", "reflect", and "diffuse" elements, you're working in 2D, not 3D. There's no differentiation between a wall hanging and a couch. You can't specify floor coverings, "cloud" hangings, nor wall type. And it doesn't actually trigger a frequency analysis, it just gives recommenations based on the geometry you provided. Mine said low frequencies could be a problem, kind of like a horoscope that predicts an upcoming trip. Unlike horoscopes, though, I believe these guys (audiofb.com) intend to add useful information. After the analysis, I enabled it and listened to the track. It seemed to turn the stereo into mono and squash both highs and lows. I was expecting frequency adjustments like the ARC X plugin, but this just killed the music (I did match volume levels between ARC X, RoomDIY, and nothing). So, disappointed, but staying tuned. If you love RoomDIY, tell me how I misused the tool. I want to love it, too.