Eight weeks is an aggressive timeline for a mobile app. Most agencies quote 16–24 weeks. We've shipped production iOS and Android apps in eight weeks, repeatedly, without the corners-cutting horror stories. Here's exactly how we do it.

The key is not working faster — it's making better decisions earlier. Every week lost in a mobile project is usually caused by a decision that could have been made in week one but wasn't.

Week 0: The Decision Sprint

Before a single screen is designed, we run a structured 2-day workshop with the client. The output is a four-page "decision document" that answers: What is the single core action the app enables? Who is the primary user (one persona, not five)? What does success look like at 90 days post-launch? What are the three features that must be in v1, and what is explicitly deferred to v2?

This document becomes the tie-breaker for every design and engineering argument that happens in the next eight weeks. "Is this in scope?" stops being a political question and becomes a factual one.

Weeks 1–2: Discovery and Architecture

Designers run user flow mapping and wireframing in parallel with engineers making the key architectural decisions: framework (React Native or Flutter), backend approach (new API vs existing integration), authentication strategy, data model, third-party services. These decisions must be locked by the end of week two.

The biggest time sink in mobile projects is changing these foundational decisions mid-build. If you switch authentication providers in week five, you lose a week. If you discover the backend API doesn't support the data your screens need in week six, you lose two weeks. Surface these issues now.

Weeks 3–4: Design Sprint

High-fidelity UI for every screen in the MVP. We use Figma with a component system that maps directly to the code components we'll build — button names, spacing tokens, and colour variables match between design and code. This is non-negotiable; it eliminates an entire category of designer-developer friction.

By the end of week four, the client has seen and approved every screen. There are no "surprise UI" moments in week seven.

Weeks 5–6: Core Build

Engineering sprints with daily standups. We build features in the order that creates the most testable progress: authentication first (nothing works without it), then core data flows, then the primary user journey, then secondary screens. Each feature is testable before the next one begins.

We deploy to TestFlight (iOS) and the Google Play internal track at the end of week five — even if it's incomplete. Getting the app onto real devices early surfaces device-specific rendering issues, performance problems, and UX friction that simulators miss entirely.

Week 7: Integration and QA

All third-party integrations (payments, analytics, push notifications, social login) are completed and tested. QA runs the app against a structured test matrix: every primary user journey on both platforms, edge cases, empty states, error states, offline behaviour. Any bugs blocking launch are fixed; nice-to-have fixes are logged for v1.1.

Week 8: Launch Preparation and Submission

App Store and Play Store assets (screenshots, descriptions, keywords, privacy policy) are prepared by a dedicated team member while engineering handles final fixes. Both submissions go in by Wednesday of week eight, accounting for Apple's 2–3 day review time. App is live by Friday.

What Makes This Possible

Two things: ruthless scope control and parallel workstreams. Design and backend development run in parallel from week three. QA starts in week five, not week seven. The client is involved every week — not for approval loops that kill momentum, but for 30-minute decision calls that unblock the team.

The other thing that makes it possible: we've done it enough times to know exactly where the landmines are. The first time you build a mobile app in eight weeks is very hard. The tenth time, it's a well-oiled process.

If you have a mobile app idea and a genuine need to move fast, we'd love to talk.