Works great if you use it right.
Today is Monday, 16 May 2016. I just bought the Gemni 2 upgrade and used it. The program is working fine. For best results, don’t try to scan your entire hard drive. Let’s say you think you have some duplicate photos in two different places. Follow these steps: (1) Create a single folder on your desktop called ‘compare’ and then drop folders or files inside of that. (2) Click and drag the ‘compare’ folder into the Gemini 2 app. It compares everything in the folder you drop onto the app. It’s really that simple.
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Gemini 2: The Duplicate Finder, v2.0.5