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Carlet
Carlet

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I built a chat app where AI is already in the conversation — here's what happened on launch day

I launched Sophie yesterday on Product Hunt and wanted to share the story with this community.

The problem I was solving

I kept switching between 4 apps to do one thing:

  • WhatsApp to talk to people
  • ChatGPT to get answers
  • Google to search things mid-conversation
  • Email to share files

So I built Sophie — a chat app where AI is just already there.

What Sophie does

You chat normally. But when you need something — a quick answer, a file summary, help drafting a message — you just type @sophie. No switching tabs. No copy pasting.

Every user also gets a private room called MySophie — think out loud, ask anything, nobody else sees it.

And there are client rooms — dedicated spaces for each client where they only see what you share.

The stack

  • Next.js 14
  • Vercel + Vercel KV
  • Anthropic Claude API
  • Clerk for auth
  • Capacitor for mobile (native app coming)
  • Vercel Blob for file storage

What I shipped on launch day

  • Discovered push notifications were broken — fixed same day
  • Added a live demo on the landing page — no sign up needed, just type
  • Faster message polling
  • Spanish and Czech translations

Try it

You can try Sophie without signing up at meetsophie.app — there's a chat widget right on the homepage.

Would love feedback from developers especially — what would you build differently? What's missing?

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