All apps should be as good as this 😁👍 You can't ask much more from an app  and this has what I need: No Advertising  Simplicity  Small file size  Zoom from screen  and more. If you used Windirstat on a Windows PC  you'll appreciate this...and it's faster! Like Windirstat  the only function I would add would be the ability to transfer and backup files to some external location like a cloud or PC wirelessly  but that would add more to the file size  wouldn't it? Overall  this is a fabulous app.