The honest answer is "it depends," but that's not useful on its own, so here's what it actually depends on, with real ranges attached — the same variables that drive MVP cost drive the timeline too, because both are functions of scope.
Realistic timelines by scope
- Single-workflow MVP (one core user journey, Stripe billing, basic auth, functional UI): 4–8 weeks.
- Multi-role MVP (admin/member/billing-owner roles, two or three integrations, more polished design): 8–14 weeks.
- Anything broader is a v1 product, not an MVP, and should be scoped as one — often 3–6 months.
These assume a dedicated team working from a written scope, not a side project fit in around other work.
What actually eats the schedule
It's rarely the code that's slow — it's the decisions around the code. The biggest time sinks, in order:
- Undefined scope. Every week spent debating whether a feature is "in" or "out" is a week not spent building it.
- Design-approval loops. Slow or indecisive feedback on design mockups is the single most common real-world delay we see, more than any technical issue.
- Third-party integration surprises. A payment provider's sandbox environment, an API with sparse docs, an OAuth flow that behaves differently than the documentation says — these add days you can't fully predict upfront, which is why a good quote builds in contingency for exactly this.
- Scope creep. "While we're in there, can we also add..." — each addition is reasonable on its own and adds up to a materially longer timeline in aggregate.
How to actually compress the timeline
The legitimate ways to go faster: cut scope (fewer roles, fewer integrations, defer the polish pass), commit to fast design-approval turnaround (24–48 hour feedback windows, not a week), and pick integrations with mature, well-documented APIs over cutting-edge or niche ones. AI-assisted development compresses the pure implementation time significantly — see our note on AI pair programming — but it doesn't remove the need for scope decisions and design feedback, which are still the actual bottleneck in most builds.
The illegitimate way to go faster — skipping QA, skipping a security review, shipping without testing edge cases — isn't actually faster, it's just moving the time cost to after launch, when it's more expensive and more visible to your first customers.
What a realistic quote should tell you
A trustworthy timeline quote names the specific risks that could move the date (a particular integration, a design-approval step) rather than giving a flat number with no caveats. See our questions to ask an agency for how to spot the difference. Every fixed-price MVP quote we give includes a timeline with the actual risk factors named upfront.