i found their site and in confused by this part of their intro page:

“That was how the idea started to grow in my head. After that, I began to find existing solutions in the self-hosting space with similar backup functionality and the performance level of the App-Which-Must-Not-Be-Named. I found that the current solutions mainly focus on the gallery-type application. However, I want a simple-to-use backup tool with a native mobile app that can view photos and videos efficiently.”

what is the main thing that separates immich from other “gallery-type applications”? wouldnt all comparable apps have some kind of gallery?