I really tried to like this app, but it's very non-intuitive for somebody that doesn't really have any idea how to use it. I read the documentation included, and even it didn't really help.

When you launch this app, you're presented with an Open File dialog... however, that's the only one you'll ever see, unless you relaunch the app. So, that means that between each photo (if you're doing a batch), you'll have to quit the app, then restart it. A simple 'Open File' button somewhere in the menubar would be nice.

Second big problem... this application does not support TIFF files, a huge dealbreaker for many people that would want to use it to denoise high-quality photos. So, since it didn't support TIFF, I tried converting the photo to PNG then opening it with ADN... no dice: "Out of Memory" error on a 6.2Mp image. So, throwing caution into the wind, I converted my picture to JPEG, which ADN finally recognized and opened.

So, now you're shown your photo in the main window, and that's it... nothing in the three side windows that are supposed to allow you to find edges, adjust the surfaces, and play with the Texture of the noise. So, I click on the photo, and voila! a piece of the photo shows up in each box now.

You then have a series of sliders next to each of the aforementioned side windows, only they're unlabeled, so you just have to play around with them, then you notice that, after a brief delay as a calculation is done on the part of the photo you have selected, that these sliders adjust the values of the different adjustment fields.

So, I play around with those until I get a feel of what they're doing, and then click the button that is supposed to apply the adjustments to the whole photo... only nothing happens. I tried clicking the button several times, and still, nothing happened.

So, I clicked the 'Save' button, and received an error stating: "The image you wanted to save was not calculated"... but... but... I clicked the 'calculate' button a half-dozen times.

So, in frustration, I clicked the 'Quit' button (which doesn't even warn you before it closes the app), and dropped it into the trashcan.

Looks like I'll be sticking with Noise Ninja, which is a commercial app, but at least it works in an intuitive fashion.