ImageCopy 4+

It is useful and not many If any like it in the App Store

This is a good idea but it is very limited in what images it can capture. Almost no web images can be captured, probably because of something about how the images are defined in the web page. For example I tried pressing on various web images to a point where it appeared that the image was selected and a Copy button was displayed. I then pressed Copy but ImageCopy did nothing. I went to a blank iPhone message window and pressed Paste in the message window. What was pasted was some text and not the image. So apparently the web page was structured to not present the image in a way that it could be copied. The ImageCopy instructions describe an alternate method for capturing an image where you cause a capture frame to be created outside the image you want to copy, and then you drag the handles around the image and then press Copy. This doesn't work either for web images that aren't set up to permit copying.
ImageCopy does work to capture a small subset of the images on the web that you might want to capture. (I don't know why a few work and most don't.) ImageCopy WILL capture an image in your Camera Roll and make a copy of it on the Camera Roll. That does have some utility. But don't expect ImageCopy to be reliably useful for copying images from web pages. Too bad.