I sadly change my UI almost every day
edit - You lie Petrah! I know!
Also - I kept the same UI for about a couple months when I initially made Svelte. Thats about it. I change my UI more than I... (edited out profanities!)
edit x 3 - What Haylie said - I change my UI over and over again slowly over time. If I see an idea, I change my UI Completely to configure this new Idea I have in my head. Only a couple UIs I have released are something that I was extremely happy about ie rect ui, Svelte, Lucid Dream, Ele UI are some of my absolute favorites and I constantly revert to them.