The Notus designs and ships software that real users reach, and that AI tools can read and cite. We finish the prototypes that nearly work, and we build the sites that should have been custom from the start. Fixed scope, fixed price, and you own the code.
The Notus is a small studio with two jobs. The first is the fractional CTO seat: you have an AI-built prototype that mostly works, and we take it to production the right way, with auth, payments, AI pipelines, and a database that hold under real traffic. The second is custom sites and rebuilds: a brand-new site, or a migration off Webflow, WordPress, Squarespace, or Wix into custom Astro on Cloudflare.
Both pillars share one principle. We charge a fixed price for the part neither an AI tool nor a template builder could do, and then the work is yours. No retainer, no hourly billing, no scope-creep invoices, and no platform subscription to us. And because so much discovery now starts inside ChatGPT, Perplexity, and Google AI, every page and product we ship is structured to be read and cited by those systems from line one. That is the through-line of the name itself.
Notus. The Greek Νότος, the south wind, crossed with the Latin notus, meaning "known." Visibility carried on a current: software that gets found because it was built to be legible, to people and to machines alike.
You have a vibe-coded prototype from Lovable, Cursor, Claude, Bolt, Replit, v0, or Windsurf that mostly works. We take the fractional CTO seat and finish it: auth, payments, and webhooks that hold; AI pipelines that don't crash or bleed cost; a database that scales past ten users; and the security passes no AI tool runs for you. Native iOS and Android via Capacitor if you need it.
A custom website redesign, or a brand-new site from scratch. Our in-house team handles brand, design, and engineering, then sets you up to keep editing the site yourself by talking to Claude or Cursor, with guardrails that make that safe on a live business. Custom website development starts at $4,000; standalone brand and design from $800; monthly AI content at $400/month; a full custom SaaS from scratch typically $25,000 and up.
A songwriting app across web, iOS, Android, and inside DAWs, from one React codebase, designed and built from a founder vision with no prototype to start from. 92 signups in month one with zero ads, and #1 in ChatGPT for "best songwriting app" within seven days of launch.
Read the case study →AI-aggregated business intelligence across 107 topic verticals, rebuilt from a Google AI Studio shell with no backend into a real multi-model production system on 15 worker services, with an 89% research-cost cut.
Read the case study →An AI trading-card platform built from a founder idea with no visual rough draft: a custom multi-model image pipeline, a 3D card-slab viewer, a creator marketplace, and dual auth plus dual payments (Stripe and crypto).
Read the case study →The same stack runs under all three.
TypeScript and Astro on Cloudflare Workers, Supabase for data and auth, Stripe for payments, the OpenAI, Anthropic, and Groq SDKs for AI, and Capacitor for native iOS and Android. We pick the right model and the right data source for each job rather than wiring everything to one vendor, and we write the governance pack alongside the code so the next engineer can change a prompt or swap a model without guessing.
The Notus is a fractional-CTO and custom-site studio based in Tampa, FL, working worldwide and remote. Founded in 2025, we run two pillars: taking AI-built prototypes to production as a fractional CTO (from $7,500, in three to four weeks), and building or rebuilding custom sites in Astro on Cloudflare (from $4,000, productized).
We have designed and shipped three public SaaS products end-to-end: Song Cage, a songwriting app across web, iOS, Android, and DAWs; Pulse, an AI business-intelligence platform across 107 verticals; and Cardify, an AI trading-card marketplace. Song Cage reached 92 signups in its first month with zero ads and ranked #1 in ChatGPT for "best songwriting app" within seven days of launch.
No. Every engagement is fixed scope and fixed price. There is no retainer, no hourly billing, and no platform subscription to us. You own the code outright when the work is done.
We build on TypeScript, Astro, and Cloudflare Workers, with Supabase for data and auth, Stripe for payments, the OpenAI, Anthropic, and Groq SDKs for AI, and Capacitor for native iOS and Android. Every page ships structured for ChatGPT, Perplexity, and Google AI to read and cite from line one.
The Notus is based in Tampa, FL, and works with clients worldwide and remotely.
Notus is the Greek Νότος, the south wind, and the Latin notus, meaning "known." The name reads as visibility carried on a current: work that gets found because it was built to be legible, to people and to AI alike.
Free written estimate in 48 hours. No call required.