This is a very kind gift to the community. The UI is quirky, and it took some tinkering to figure it out. Bottom line, though: It does exactly what it promises to do.
I just want to say this is an amazing tool. It's an incredibly useful and practical front-end to GPT. I very much appreciate, also, that it's a one-time purchase. That made it a no-brainer and I'm happy to support the developer.