Draft in the cloud. Keep your voice. Ship when you're ready.
Spressif is a composition layer upstream of Substack, Beehiiv, Medium and Ghost. Lock a voice guide, write posts in Markdown, attach notes to passages, run scoped AI assist when you ask for it, then copy clean Markdown or HTML — or publish on spressif.com with a permalink and RSS feed.
Early access list. One email when it’s ready. No spam.
The problem with AI for creators
Most AI writing tools optimise for speed and sameness. Your newsletter starts sounding like ChatGPT. Takes contradict each other across months. Research and TODOs live in side docs, not next to the paragraph they refer to. Platforms own audience and delivery — they don't protect how you sound.
What Spressif is for (MVP)
A cloud writing app for solo bloggers and newsletter operators. Not another CMS. Not an SEO content mill.
- Voice guide: tone, positions, audience and banned phrases the model must respect
- Anchored notes: comments and todos stuck to passages in Revise mode
- Scoped assist: draft, revise and voice-check — opt-in only, never background inference
- Copy out or publish: Markdown/HTML to clipboard, or a public page on Spressif with RSS
- Credits + BYOK: starter credits on signup, then bring your own model keys
How it works
- Sign in with a magic link — drafts live in the cloud on any device.
- Set your voice guide before you ask for a full draft.
- Write a post, add notes on sticky paragraphs, run assist with voice + post context only.
- Copy out to Substack, Beehiiv or Ghost — or publish on Spressif from What next? in the studio.
Why I’m building this
By day I'm a Product Engineer. I've spent a lot of time on specification-driven AI for code, and I've packaged the same discipline for fiction writers who lose continuity in chat. Creators hit a parallel wall: voice mush, forgotten claims, notes that drift away from the draft. Spressif is that habit for newsletters and blogs. If you wanted a Substack clone or an SEO content mill, this isn't it. That's deliberate.
FAQ
- Is this a Substack or Beehiiv competitor?
- No. They own audience and delivery. Spressif is the writing brain upstream: draft, review, copy out or publish a simple public blog on spressif.com.
- Will this write my newsletter for me?
- No. You decide the take. The AI drafts inside rails you set. That's AI-assisted writing, not “press button, receive issue”.
- When does it ship?
- The MVP web app is live for early users — sign in with a magic link and open the writing studio. Join the waitlist if you want launch updates.
- Who is this for?
- Solo bloggers, newsletter operators and creators who publish often and hate sounding like ChatGPT.
Want early access?
Join the list if you want AI writing that keeps your voice and plays nicely with where you already publish.