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Build · you have an idea

Got an idea? We'll build it production-grade from day one.

Vibe-coding speed without the vibe-coding debt. We scope it, agree a fixed quote, and ship working software every week until it's live.

What we build

From first MVP to the tools that run your business.

  • MVPs

    Your first version, scoped to what proves the idea.

  • SaaS web apps

    Accounts, billing, teams, dashboards, admin.

  • Mobile apps

    iOS and Android from one codebase with Expo.

  • Internal tools

    Back-office apps that replace the spreadsheets.

  • AI features

    Assistants, agents, and automations with guardrails.

  • APIs and integrations

    Payments, CRMs, webhooks, and data pipelines.

How we're different

The speed of AI. The judgment of engineers.

Doing it yourself with AI is fast until it isn't. A traditional agency is safe but slow and expensive. We sit in between.

  • AI for speed

    We use the same AI tools you'd use, so boilerplate and first drafts take hours, not weeks.

  • Engineers for judgment

    Senior engineers own the architecture, review every change, and say no to shortcuts that cost you later.

  • Standards for safety

    Tests, CI, monitoring, and the Cosmerg Security Standard are in from the first commit, not bolted on.

An opinionated default stack

Standard, well-supported tools are cheaper to build with, easier to hire for, and safer to run. We change it when your product needs something else.

  • Next.js
  • TypeScript
  • Postgres
  • Supabase
  • Stripe
  • Vercel
  • Expo

The process

Map. Build. Launch. Orbit.

A demo and a preview deploy every week, so you always see exactly where your money went.

  1. Step 01

    Map

    We scope the product, design the architecture, and fix the price.

    You get
    Spec, clickable prototype, and fixed quote
    Time
    ~1 week
  2. Step 02

    Build

    Weekly sprints with a demo and a preview deploy every week.

    You get
    Working software, tested and reviewed
    Time
    4–8 weeks
  3. Step 03

    Launch

    Production hosting, domains, monitoring, backups, and a rollback plan.

    You get
    Live app and a runbook
    Time
    1–3 days
  4. Step 04

    Orbit

    Ongoing monitoring, patches, and new features as you grow.

    You get
    Monthly health report
    Time
    Monthly

Engagement models

Fixed scope. Fixed quote. No surprises.

Every build starts with a one-week Map sprint. Its fee is credited toward the build.

Map

~1 week

Turn your idea into a plan with a fixed price.

One-off fixed fee

Quoted after a free call

  • Requirements and user flows
  • Architecture and stack decision
  • Clickable prototype
  • Fixed quote, fee credited toward the build
Book a Map sprint

MVP Build

4–8 weeks

Your first version, live and production-grade.

Fixed quote

Quoted after a free call

  • Core features, auth, payments, admin
  • Weekly demos and preview deploys
  • Tests, CI/CD, monitoring from day one
  • Production launch and handover
Start your MVP

Product sprints

2 weeks each

Ship features in fixed-scope two-week sprints.

Fixed quote per sprint

Quoted after a free call

  • Scope and price agreed before each sprint
  • Demo and release at the end
  • Same quality bar and security standard
  • Stop any time
Plan a sprint

FAQ

Before we write the first line.

What stack do you build with?

By default Next.js, TypeScript, Postgres (often via Supabase), Stripe, and Vercel, plus Expo for mobile. A standard stack is cheaper to build, easier to hire for, and safer to run.

How is this different from vibe-coding it myself?

We use the same AI tools for speed, but engineers own the architecture, review every change, write tests, and apply our security standard. You get the speed without the debt.

What if the scope changes mid-build?

We agree on changes before doing them. Small swaps fit inside the sprint; bigger additions are priced as a new sprint, never as a surprise invoice.

Who owns the IP?

You do. Code, designs, and accounts are yours from day one and live in your organisation's accounts.

Tell us what you want to build.

A short brief is enough. We'll reply within one business day with questions and a Map sprint plan.