Also, thanks! Very nice to hear that someone appreciates my work, means a lot! Sad to hear Apple didn't allow you to offer the "bring your own keys" model. I was considering that it would be an attractive option for more tech-savvy users to avoid the apple tax. As app developers, we could still charge for the app, but not for usage. For more professional applications like coding with GPT-4 that would make a noticeable difference for end users spending.