Every agency promises fast. Here is what fast actually means in real numbers, and what determines whether your app hits 30 days or 90.
The honest timeline table
Simple MVP (single user role, one primary workflow, Stripe, auth)
3–5 weeks on a full-stack Next.js stack with one senior engineer and a written brief. This is achievable. It requires discipline on scope: one user role, one CRUD flow, one integration.
Two-sided marketplace (buyers + sellers, listings, payments, messaging)
7–10 weeks minimum. The complexity is not the UI — it's the trust and payment mechanics. Anyone quoting less is cutting something that will bite you.
Mobile app (iOS + Android)
Add 3–4 weeks to any web estimate. React Native with Expo reduces this. Native Swift or Kotlin builds double the backend estimate.
Platform with integrations (CRM, payment, analytics, notifications, webhooks)
Add 1–2 weeks per non-trivial integration. Integrations feel like plumbing but most of the bugs live there.
What makes 30 days impossible
- No written scope before work starts. Every undefined screen costs two days.
- Changing the data model mid-build. It resets the entire backend.
- Design done during development, not before it.
- More than one primary integration.
- Any real-time feature (chat, live notifications, collaborative editing).
What makes 30 days likely
- A written one-page scope before the first sprint.
- One primary user object.
- One payment or integration requirement.
- No mobile requirement (web first).
- A client who approves mockups within 24 hours.
Yo! Launch builds and ships MVPs on fixed-price, written scope. Scoping call is free. We tell you in the first conversation if 30 days is achievable.