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Before the first line of production code

Software prototyping sprints,
so a bad assumption fails in a week, not a year.

Most software problems that sink a budget were visible before development started — a workflow that doesn't hold together, a competitor who already solved this more simply, an estimate built on a guess nobody tested. A prototyping sprint puts the idea in front of real scrutiny — technical, competitive, and financial — before you commit a full build's budget to it. What comes out the other side is a working prototype and a real plan, not a deck.

Scope a prototyping sprint How engagements work
A clickable prototype, not a slide deckA written risk assessment, named plainlyA real estimate for the build that follows

1 sprint

Fixed scope

One deliverable, one timeline

Clickable

What you get

Not a slide deck or a mockup PDF

100%

Yours either way

Prototype code included, proceed or not

10 bus. days

To start

From a signed scope

What it tests

What a prototyping sprint actually de-risks

"Prototype" gets used loosely enough that it's worth being specific about what a sprint here is actually testing, because the answer changes what gets built during it.

Technical feasibility

Whether the hard part of the idea — a specific integration, a real-time feature, an algorithm you're not sure behaves the way you assume — actually works the way it does in your head. This is the part most worth testing first, because it's the one that's expensive to discover is wrong mid-build.

The workflow, clicked through by a stranger

A wireframe on paper looks coherent. The same flow, clicked through by someone who's never seen it, finds the step that doesn't make sense within the first two minutes. That gap between "makes sense to us" and "makes sense to a first-time user" is exactly what a sprint is built to surface early.

Where you actually sit against what already exists

A short, honest teardown of the two or three closest competitors — not to copy them, but to find out whether the differentiation you're planning to lead with is real or already commoditized. It's a cheap way to avoid discovering the answer after launch.

Whether the estimate holds up

A number quoted before anyone has seen a data model or a real workflow is a guess with a decimal point. Once the prototype exposes the actual complexity, the estimate that follows is built on what the software has to do, not on what it looked like it had to do from the outside.

The deliverable

What you leave a sprint with

Four concrete things, not a summary of a conversation. Each one is meant to be usable on its own, whether or not you build the next phase with us.

A clickable prototype

Wired-up screens that respond the way the real product would, built to be walked through — by you, by a stakeholder, or by a potential investor — without anyone narrating what's supposed to happen next.

A named risk assessment

The specific things that could go wrong with the idea, written down plainly rather than implied in a meeting. A risk that's been named in writing gets planned around; one that only ever got mentioned out loud tends to resurface later as a surprise.

A short competitive read

What the two or three nearest alternatives actually do, and where the idea in front of you is genuinely different from them versus where it currently isn't.

A real project plan and estimate

Team size, phased scope, and a timeline built from what the prototype actually revealed about the problem — not a placeholder number from before anyone had looked closely at it.

What it costs

Prototyping sprint engagements

Different sprints answer different questions. Pick the one that matches what you're actually unsure about.

SprintCommitmentTimelineWhat's included
UX / clickable prototypeFixed scope1 – 2 weeksWireframes through a clickable prototype of the core workflow, tested with at least one person outside the team.
Technical feasibility spikeFixed scope1 – 2 weeksA working proof-of-concept of the single hardest technical piece — an integration, a real-time feature, a performance question — answered with running code, not an opinion.
Investor / stakeholder pitch prototypeFixed scope2 – 3 weeksA polished, demo-ready prototype built specifically to be shown in a room, plus the talking points behind the decisions it makes.
Full sprint (UX + technical + competitive)Fixed scope2 – 4 weeksAll four deliverables above in one engagement, when more than one kind of risk needs answering before the build is scoped.

Ranges assume US-based senior engineers and a single core workflow per sprint. A broader idea gets scoped as a longer sprint or split into phases rather than compressed into the same window — compressing it just moves the risk from the sprint into the build that follows.

When it's worth doing

When a sprint earns the week — and when to go straight to build

A prototyping sprint is the right call when the risk it removes is worth more than the time it costs. It isn't automatic for every project, and being clear about when to skip it is part of scoping it honestly.

Genuine uncertainty is worth a sprint

New territory for your team, an integration nobody has built before, or a workflow you're not confident holds together — this is exactly what a sprint is for. The cost of being wrong here, discovered mid-build instead of before it, is the thing the sprint is priced against.

High-stakes rooms are worth a sprint

Presenting to investors, a board, or a client who's deciding whether to fund the next phase. A working prototype makes a far stronger case than a deck, and the prep work doubles as real technical validation instead of pure theater.

A well-understood feature can skip straight to the build

Adding a known pattern — a login flow, a standard CRUD admin panel, a workflow you've already validated in an earlier version — usually doesn't need a separate sprint first. In that case the honest move is to fold discovery into the build's first phase rather than charge you for de-risking something that isn't actually at risk.

An internal tool with low blast radius often doesn't need one

If a misstep is cheap to fix and only your own team feels it, a short discovery conversation inside the build itself is usually enough. Sprints earn their cost when the downside of being wrong is expensive or hard to reverse — not as a default step before every project.

What happens next

From sprint to build, honestly

A sprint is designed to produce one of three outcomes, and all three are treated as a legitimate result of the week — not a sales funnel with only one acceptable ending.

Validate, then build

The prototype confirms the idea holds together. Code and design decisions from the sprint carry forward into the build, so the first phase of the real project starts ahead of a cold scope rather than repeating work.

The idea needs to pivot, not restart

The core direction is right but a specific assumption wasn't. We re-scope the part that changed and, when it's material enough, run a short follow-up sprint on just that piece rather than the whole idea again.

The idea doesn't hold up, and that's the sprint working

Finding this out for the cost of a sprint instead of a full build is the actual return on doing one. You keep the prototype and the risk assessment either way — they're deliverables, not sales collateral withheld pending a bigger commitment.

Related

Related services

Where the work goes next, whichever way the sprint lands.

Questions

Questions about prototyping sprints

What teams ask before a first call.

A prototype exists to test an assumption — technical feasibility, a workflow, market positioning — and doesn't need to be production-ready or handle real user data at scale. An MVP is a real first release: production infrastructure, real users, real data, and a scope narrow enough to ship in weeks rather than months.

A prototype is disposable, or partly disposable, by design. Some of its code and most of its decisions carry into the MVP, but it isn't the same artifact wearing a different name.

Have an idea worth stress-testing before you build it?

Thirty minutes with a senior engineer, before anything is scoped. Bring the idea and the part of it you're least sure about, and you'll leave knowing what a sprint would actually test and roughly what it takes — whether or not you run it with us.