This app is really quite amazing. The “Pro” version is only a couple of dollars and worth it. Everything works like you would hope it would. You add one or more folders (or even an entire drive) to be reviewed by clicking on a blue colored folder with a “+” sign in the icon. You then click on “Begin Scan” and the app scans the folders/drive. That process can take several minutes, and a countdown system tells you how many files it has scanned and how much time is remaining. Then you are presented with an extensive screen of listing the files. You can select the age of files (older than) to be reviewed. You can sort the list by clicking on a header topic (Name, Size, Date Created.) You can select individual files to be deleted by clicking on them. You can right click on a folder and select “select all in folder” and all the files in the folder will be selected for deletion. You can right click on a previously-selected folder and selected folder and select “Deselect all in folder.” Our you can select all in a folder and then click on individual files in that folder to deselect that file for deletion. When you are finished, click on “Delete Files” in the lower right corner and the selected files will be deleted. After you have deleted the selected files, a pop up window appears summarizing the results. One thing that is not immediately obvious is how to proceed after that. There are some colored icons across the top that are the best choices. All in all, a great app.