Didnt work….

I got this app to find some CRW files on CF card. The files are there as another app found all of them. I ran every option and scan type available multiple times and all it found was the preview jpegs the camera uses on its lcd screen after youve taken a shot. These image files are listed as supported files. I contacted the developer and gave them two weeks to find out what could be wrong after sending them some sample files. When I didnt get a reply I contacted them again and was told that these files are only supported on a Quick scan. Althought there was not mention of that anywhere. Some of the files are accessible by normal means but this app didnt find a single one. They were not overwritten nor were they damaged but it still didnt find any. While other reviewers seem to have had success my experience with this app has been a total failure and I will try to recover my cost through Apple. Then I will go back to using the other open source terminal app that actually found all my files.
So while it didnt work for me your mileage may vary. Just to add, when I contacted support, I did get a reply in a timely manner, but they did not resolve my problem with this app and it also seemed that the rep wasnt aware of these common file types and after two weeks of waiting I didnt think they would respond anymore.
Take your chances or try another app.

Raindog23 about Disk Drill Media Recovery, v1.7