It does exactly what it advertises

The app says it is supposed to rename photos to their date and time taken, and it does exactly that perfectly. Also you can add prefixes and suffixes, as well as make time corrections if your camera was off. Worth the money, if you have a newer MacBook the processing time for me is about 200 pictures per second. Great little app :) P.S. I’m running El Capitan, so it still works on newer OS X versions.

WillSmith528 about iSortPhoto