It's really not fair to compare Gemini to iCloud, but of the products offered, I could not find one that was a direct comparison to Gemini. What I will say is that Gemini works well in conjunction with iCloud as, without Gemini, iCloud replication across Macs would exacerbate …
As I described in the initial use case, Mac storage is a premium, so having a tool that helps your storage stay clean is incredibly useful. Almost always, duplicates are wasted space, so Gemini is a single purpose tool that helps you identify duplicates easily for quick clean up of your Mac's hard drive. Point of fact, it'll help clean up your cloud storage space too, if you select your cloud sync folders on your machine as well!
File De-Duplication - Gemini does a great job of finding files that are bit-for-bit identical to each other. Typically these are caused by user replication, and Gemini sniffs them out and displays them for easy user decisions.
Similar Photo identification - Got a lot of similar photos, but not the exact same one? That's ok, this is a huge source of wasted space, and Gemini can deal with these too. If you're a "spray and pray" type of photographer, Gemini will help you clean up near-duplicate photos, helping you keep only the best.
Fast File Triage - Once Gemini has identified all these duplicates, what do you do with them? Gemini helps you triage the list of duplicates and easily decide which copies to keep. This is handy if you want to keep all files in the X folder, but not in the Y folder.
I've never had any problems with the support for the Gemini application itself, but it seems every time I re-install (on a single machine), I run into a licensing issue. As a result, I need to go to the app's website and request that my activation key gets reset or resent. In either case, it's a pain, but as I have to reinstall infrequently, it's a small price to pay for an otherwise solid application.
