I use it every day because it works. – Veracity - Reverse Image Search Review

This app does exactly what it says. Only very rarely has it not identified an image and found other copies of it, and when that has happened it might well be because there are none. It's terrific for identifying pics, and it's terrific for finding better versions of them. For example, I've often used it because I have a mediocre file (too small, perhaps, or blurry) and need to replace it with a better version. I've been very happy with this for a long time.
Review by Stuart Gardner on Veracity - Reverse Image Search.