For such a long time Ashampoo didnt giveaway a good software without the installation the add ware of the Ashampoo app. This is clean app without it. Hence is a keeper. A bit outdated maybe? I dont know. I tested on a few photos and actually like it. Smooth registration and the license will be kept in my Ashampoo online account. Love the app and mort important love the way of the distribution. No option for Portable, but i dont complain. Mostly works for me under the auto button to use drop down arrow and do single gamma with single or double sharpness. Some other pics single auto normalize with single auto sharpness. Test for yourself to find optimal. Thank you Ash and Ashampoo. Double thumb ASH!