If you're non-technical and just wanting to play around with UI, I highly suggest you explore Claude Design. It's programming under the hood to make prototypes, but the coding is 100% hidden away from you. It can help you explore design ideas pretty quickly.
I lean more towards claude for this exact reason, yet I've heard it runs through tokens like hell on the $20 (could i ask him to add specific features without problems? ) Is codex ui trash or pretty calm ( I have 2->5 app concepts i'm working on rn )