Your landing page is not trustworthy. Why should i trust you? You basically are using shadcn UI. The demo video is about other project. Too many shadows. I don't even know what you are trying to sell in your landing page. This page is stunning in the bad way. Where can i get the boilerplate? Who should buy your boilerplate? Who is your persona? Does it uses AI?
I haven't actually bought Shipfa.st, though from what I heard about it is that it doesn't follow coding best practices with clean code and a good scalable architecture.
Having worked at Spotify as a software engineer, my starter kit is built with these core principles in mind. Enhancing collaboration, clean code, full type safety and scalability. So I'd say it is more robust and targeted towards solo founders as well as mid sized startups with a team.
Big talk. Is it open source? Or are you expecting people to believe you that whatever work you did at Spotify is the best way to start a project with 1/10000000 of the resources available?
The fact is that Next.js is becoming complicated. It's not simple anymore. Now you have to use a app folder with "page.js" to make it as a route. It's not file system routing anymore. It's folder router.
Besides that, app folder is slower than pages.
The amount of complexity to build a simple react app is overwhelming. You need to know the conventions created by a so called convention free framework.
I've been building nextjs apps for 1+ years, but for the next one I will be looking for an alternative, maybe Remix, Redwood, I don't know.
Vercel became Apple. They really like to make great presentations, and events, to their releases, but, instead of increasing the developer experience, they are decreasing it. The only good thing about vercel, as said by the author, is the Next.js deploy, that is really easy to do.
This is largely personal opinion as someone who uses Next at work all day. But Svelte/SvelteKit or Astro are my personal goto's/favorites outside of Next. Both are robust enough to handle pretty much anything you throw at them, add a complier to help catch errors before build time, and most importantly have incredible developer experiences.
[Astro](https://astro.build) is a production-ready alternative to Next.js and has been giving me great results.
You can render simple HTML/CSS/JS snippets where required, and go all the way up to Svelte/React/etc TSX components without ceremony when you need more complexity.
It's all hand-coded web tech (html/css/js), but written in Imba (https://www.imba.io) which is a compile-to-js language that includes a react-like framework.