Espionage App Lowered Resolution of Pictures in Hidden Folder?

I purchased this application in a bundle on macupdate and it actually works very well. Now my question is, is it possible that this application somehow lowered the resolution of photos that I had hidden in a folder? Im not exactly sure of the original quality of the photos but they were taken with an iPhone 4s. The images now all show up at around 97kb and show up as thumbnails and not large photos. I'm not sure if anyone is familiar with how the application works, but is there any possible way to retrieve the original resolution of the photos?