DeNoise AI - installing trial

I am confused. If installing denoise ai what is the difference between installing the denoise installer and just clicking on the link that says ‘download trial’ and installing from there?

Also, denoise ai can be a stand-alone AND accessed thru photoshop and lr AND accessed within studio 2 - is this correct?

Thanks for any help!!!

You can download and install from the Forum, Downloads or Product Description.

DeNoise AI is either standalone or can be accessed through many other hosts that have external editor access of PS plugins such as Capture One, Lightroom, DxO, Affinity Photo, Photoshop, Elements etc.