You can also add an image description, helping others validate the authenticity of your file. You can edit or add things such as camera manufacturer and model, artist, and copyright data if any exists. Once you decide to add information to a JPEG file, keep in mind you need to have some basic intel on your image's origins, if you want to add accurate information, of course. For PNG, TIFF, DNG, and other formats, the only thing one will be capable of doing is to view the contained information. The app becomes more useful when you deal with JPEG images because for this particular format the user has the option to edit the information. You can easily view EXIF, GPS, and IPTC data. It's an editor, no matter how you look at it, but it is an efficient one at that.
The app doesn't really look surprising, nor does it contain innovative features. Adding more information, provided it is real, gives the image more authenticity, allowing other users to accurately trace its origins. This leads to the ability to correct certain mistakes and errors that are registered when snapping the picks with various malfunctioning devices. You can edit or add that info as you see fit.
Yes, it's got to do with EXIF information contained by various image formats. Exif Pilot is an application that spells out its purpose from the start.