Hi @Jay_Jiang,
I looked into this internally, and it looks like you may have previously chatted with Andreea from our sales team. I see that Andreea already let you know about our agency program, which can be a great fit for agencies and freelancers.
You're welcome to join live Office Hours if you want to keep chatting with the Retool team about any use cases. We're happy to discuss your app in more detail and go through any questions you may have. Office hours are usually Tuesdays and Thursdays at 11 am PT, but tomorrow's office hour is moved to 1 pm PT.