Ask HN: Best GenAI image app UX with own API keys?

does anyone know a simple genai image app which lets me use my own gemini nano bana api key and has a good UX for exploring multiple generations at a time?

free or paid, hosted of self-hosted; doesn't matter; i just want a better UX to explore the space of ideas when generating images and want to bring-my-own-api-key

thanks!