Show HN: Make your non-native English native

Growing up in an immigrant family, I've been asked to help family members correct their English many times.

When the ChatGPT API came out last week, I realized that it's now possible to get very reasonable results turning non-native English into native English automatically, including being able to adjust the level of formality.

I put up a demo at https://www.betterenglishai.com/ – any feedback, especially from non-native English speakers, would be very welcome.