Thanks so much for this valuable feedback. I want to make the service/the sales site as convincing as possible so it's good to know what I'm missing. I'm gonna write responses to your feedback just in case someone sees this and has the same questions:

Language around pricing

Your point about the pricing makes sense to me, and I think it's an issue with my intended market. I wrote the copy speaking to other React Native devs like myself, or freelance React devs who want to jump into app development, but I think I need to consider gearing it towards founders.

How is it better than Expo?

It uses Expo actually! Expo is just a tool, like Rails or NextJS. HyperFast is a template built on top of Expo, which has pre-built screens that you can swap out your content for. It has push notifications already set up (e.g. has code that you can uncomment to launch recurring scheduled notifications), it has best-practice UX patterns (e.g. 'app intro' screens that appear when you first launch the app that describe what the app is before you ask for signup), it's pre-integrated with a BaaS (Supabase) so all you need to do is sign up, pop in your env vars and it just works.

I've basically built a white-label general purpose app, and you can put your images/text/API URL in there and have your own custom app (with a feed, likes/favourite content, account settings, login in/log out/sign up) extremely quickly.

I don't know what this does other than vague marketing words

Point taken, I think a demo video is in order!

Thanks again for the great feedback