DayFiveStudio Request a free Prototype AuditRequest an audit

A staging URL by day five. A fixed price in writing. Zero equity.

A senior engineer who owns the outcome in writing: staging by day five, five guarantees, one fixed price.

See how a week works

Day one to day five.

Every build runs on the same week. You see the work, not a status report.

staging.yourproduct.dayfive.dev Live on Friday
dayfive / yourproduct Private
Created
Owner
Your GitHub
Cloud
Your accounts, your keys
scope.md Scope, written down

Day 1, Monday

Kickoff. Scope written down. Repo created in your GitHub, cloud accounts on your keys.

DayFiveto you

End of day two

Data model, sign-in, and the first real screen are in. Tomorrow: the core flow, end to end, on a dev URL.

Day 2, Tuesday

Build. Data model, sign-in, and the first real screen. Note in your inbox at the end of the day.

Dev dev.yourproduct.dayfive.dev

Core flow, end to end

  1. Sign in
  2. Create
  3. Review
  4. Done

Day 3, Wednesday

Build. The core flow works end to end on a dev URL.

Hardened states

  • Error states
  • Empty states
  • Loading states
  • Invalid input
  • Expired sessions

Day 4, Thursday

Build and harden. Error states, empty states, the parts prototypes skip.

Live
staging.yourproduct.dayfive.dev

Sent to your inbox. Click through it yourself.

Day 5, Friday

Staging URL in your inbox. You click through it yourself.

Every week after that ships the same way. This is the third of the five guarantees.

Day 1 of 5

Everyone sells you something other than the outcome.

Prototypes are nearly free now. Lovable alone has around 8 million users, and roughly 80 percent of them are not engineers. The scarce thing is no longer building software. It is someone accountable for the result.

Agencies sell projects.
The senior person you met disappears after the pitch.
Freelancers sell hours.
You pay for time, not for the thing working.
Dev subscriptions sell a queue.
Anonymous tickets, and no one who knows your product.
Cofounders cost equity.
A large slice of the company for someone you cannot really interview.

DayFive sells the cofounder's outcomes, priced like a project, with the certainty in writing.

Everything in the week is yours from day one.

  • Repo in your GitHub
  • Cloud accounts on your keys
  • Data model
  • Sign-in
  • First real screen
  • End-of-day note
  • Core flow end to end
  • Dev URL
  • Error states
  • Empty states
  • Staging URL in your inbox
  • Weekly release
  • Core flow end to end
  • Dev URL
  • Error states
  • Empty states
  • Staging URL in your inbox
  • Weekly release
  • Repo in your GitHub
  • Cloud accounts on your keys
  • Data model
  • Sign-in
  • First real screen
  • End-of-day note

One ladder. You start free.

StepWhat you getPrice
Prototype Audit Send your prototype, deck, or a description. Within 48 hours you get a written teardown: what is solid, what leaks, and a fixed quote to ship. Free
Proof Sprint One core flow live at a real URL. Staging by day five. $4,900
Prototype to Production Two weeks. We harden the Lovable, Bolt, or Replit app you already have and keep what works. $6,900
Launch Build The full product with sign-ins, payments, and admin. Weekly staging releases until it ships. $9,900
Founder Office Your standing CTO and engineering team after launch. $2,950per month, cancel anytime

No hourly billing, no equity, no anonymous task queue.

Every build includes a 30-day fix window and two advisory calls, in writing.

Request a free Prototype Audit

Five guarantees. In the contract, not on a slide.

  1. Change orders are approved in writing before any extra work starts. No hourly billing, no surprise invoices.

  2. The repository is created in your GitHub account on day one. No handover, no export.

  3. The primary user flow is clickable at a real private link within five working days of day one.

  4. The person on the scope call leads the work and reviews everything shipped.

  5. Every build includes a 30-day fix window plus two advisory calls, and a standing offer to continue via the Founder Office.

We take on a small number of builds at a time.

We never sell past that cap. If we are full, the audit is still free and you get a start date in writing.

For
Founders with a validated idea and a prototype, deck, or waitlist who need production software and a technical lead they can trust.
Not for
Teams that already have a CTO and want extra hands billed hourly, or ideas without a first customer in sight.

Questions founders ask

Press / to focus

  1. Every price is fixed and written down before work starts. A Proof Sprint, one core flow live at a real URL, is $4,900. Hardening a Lovable or Bolt prototype for production is $6,900. A full Launch Build with sign-ins, payments, and admin is $9,900. Regulated insurance and fintech builds start at $18,000.

  2. Yes, that is one of the main things we do. Send the link and within 48 hours you get a free written audit: what is solid, what leaks, and a fixed quote to make it production ready. The Prototype to Production package is $6,900 and takes two weeks. We keep what works instead of rebuilding from scratch.

  3. No. You pay a fixed price and keep 100% of your company. We would rather be the team you keep paying because the work is good than a shareholder you resent.

  4. You do, from the first commit. The code repository is created inside your own GitHub account on day one, so there is never a handover, an export, or a hostage situation.

  5. Scope discipline. Day 1 starts on the first business day after payment clears and the access checklist is done, and by then the scope is already written and agreed. Staging by day five means the primary user flow is clickable at a real private link. Both definitions go into every statement of work, so there is nothing to argue about later.

  6. Every build includes a 30-day fix window and two advisory calls, in writing. When you want a standing team, the Founder Office continues the work month to month at $2,950 per month, cancel anytime.

  7. Changes go through a written change order that you approve before any extra work starts. The price you signed stays the price unless you sign a new one. You will never open an invoice you did not expect.

  8. Yes. The Insurance and Fintech Build starts at $18,000 and runs four weeks. It covers compliance-aware data handling, KYC flows, and integrations with carriers and payment processors, built by people who know the industry.

Request a free Prototype Audit.

Tell us what you are building. You get a written teardown, no call required.

Your audit request

Where the written teardown goes.

Lovable, Bolt, v0, Replit, Figma, or a deployed URL.

At least 20 characters. Plain words are fine.

Request a free Prototype Audit.