It is a pretty good convolution reverb which doesn't eat up as many of your resources as say Inspirata I do wish that you could import and use third party Impulse Responses like Convology XT or the Melda one which I can't remember right now.
No, I don't like registration procedure either. It came in ONLY German on my part, and I had to register all kinds of things already just as if I were buying a real license. Best Service? A name change would be appropriate, to Worst Service, because this one beats all the former unwieldy and cumbersome registration process of any manufatcurer, software or whatever out there. You can't change language to English either. And as such the - alleged stellar reverbs - about the actual reverbs aren't sufficient and stellar enough to justify going through those ordeals, even if you try to register and buy it for real. If this is what is required for downloading a free version, I don't want to know about any real registration procedure for a real bought/licensed product.
As for that, when I finally got that free version installed, it failed to register on several hosts, both VST and AU, as I ran it on a modern Mac. Unwieldy and cumbersome, even when finally installed and opened it. Ok, enough of raining on their parade.
Other software that accepts loading IRs from Bricasti and everything else fares just as well, in terms of sound quality, Arts acoustics, and whatever else there are out there that accepts IR's (well done IR's), will produce just as similar results. The thing is you can't free up the IRs of this one and use it in whatever other (better) GUI reverb plugin there is out there. Ok, sound quality? Well, the IR's are certainly well done, but as with Bricasti IR's and especially QRS (Quantec) they fall a little short. As a freeware, there are others that performs equally as good, I can't judge the bought/registered version, but the basic reverb is the same although you can't save, or edit as much. QRS sounds flat as a pancake, at least compared to the real hardware thing. I don't say it's totally useless, but for us that wants to try out free version before one plunges into the real deal, there are alternative options that has better GUI, and easier to load 3rd party IRs on. And of course, better registration procedures...(I mean, c'mon what have these guys been smokin'... really?).
No, I didn't like the way they handle their registration and installation either but it is by far not as complicated and "impossible" as the other review suggests.
You install the software and download the free presets, open the folder and find installation/registration instructions (in English+German) inside and just follow the steps.
What you get for it is a set of 26 reverb presets that show the characteristics of the full software and that you can tweak to your liking. The sound quality is pretty impressive, for the reverbs I know pretty close to how they sound and the CPU load is low for reverbs of that quality.