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How long does it take to ship? And how long the answer stays short.

What "ship time" actually means in a written-scope engagement — what stretches the day count, and why the cadence, not the bid-shop timeline, is published up front.

CornerstoneTimeline
Reading time3 min
PublishedAug 22, 2026
Keyword · how long to ship software
01 / A range, not a number

Ship time is a product of three inputs.

The honest answer to “how long does it take to ship?” is a range, not a number. Time-to-ship = correct surface in days× tier × acceptance criteria. Every one of those three inputs is set in writing before the first PR opens — and none of them moves without an appended note in the daily stand-up so the founder can see what changed and why.

The range varies by tier; the cadence is published regardless. That’s the line we draw here, and it’s the line the rest of this post is built around.

02 / Tier-by-tier

One milestone, or a monthly retainer with a published cadence.

Starter is one scoped ship: a single milestone, kickoff through merged PR, typically two to four weeks end-to-end. Growth and Scale are monthly retainers with the same published cadence — daily async stand-up before 09:00 local, a Friday release digest summarising what merged that week, a monthly founder session reviewing the next slice. The unit of measurement is capacity, not man-hours against a timesheet.

What each tier carries in writing, including response SLAs and the named-lead surface, is documented on the pricing page.

03 / What stretches the day count

Vague briefs. Scope drift. Missing credentials on day one.

The variables that stretch the timeline are concrete and countable. A vague brief — one paragraph where five are needed — adds roughly a week to a Starter milestone. Unclear acceptance criteria force a re-scoping round before PRs can land. Scope drift after sign-off resets the clock. Missing credentials on day one block the first deploy until the founder finds them.

A sharp brief keeps the milestone on schedule. The contrast with the bid-shop model is that the timeline gets picked after the proposal round there; here, the cadence and ship-date estimate both appear in writing inside the scoping document — before the first invoice is sent.

04 / The 72-hour window

A written scope, with timelines, before the calendar invite.

A written scope lands within 72 hours of intake. Inside it, the start date and the ship-date estimate both appear together. The brief becomes a set of measurable inputs; the scope becomes a published contract on timing — revised without an invoice if it’s wrong, signed off before work starts if it’s right.

Founders with a rough idea but no written brief answer five short questions on /scope; a written scope (timelines and all) comes back without a calendar invite. Tier cadence, response SLAs, and what each level of retainer carries in writing live on the pricing page.

Bring us the brief

Liked the read? Send the work, get a scope back.

Send the rough idea through the intake form. We come back with a written scope within 72 hours, and we don’t send invoices until you’ve signed off on it.

Open the intake form

Or email wingman-stack@polsia.app with a one-paragraph brief.