Sketch → Store in 90 Days: A Senior-Only Roadmap for Mobile Launch
A battle-tested four-phase plan to go from concept sketches to App Store approval in 90 days—with senior engineers and designers only.

Speed without sacrifice.
A 90-day sprint structured around senior-only teams, clear milestones, and production-ready deliverables.
Table of Contents
- Overview
- Phase 1 – Discovery & Design
- Phase 2 – Architecture & Core Features
- Phase 3 – MVP Development & QA
- Phase 4 – Store Submission & Monitoring
- Conclusion
Overview
Launching a mobile app in 90 days demands ruthless prioritization, senior-only execution, and parallel workflows. This roadmap assumes:
- Team: 1 UX designer, 2 mobile engineers (iOS & Android), 1 backend engineer, 1 QA engineer, 1 product lead
- Cadence: Two-week sprints, daily standups, continuous integration
- Tech Stack: React Native / Swift & Kotlin, GraphQL API, Firebase / Supabase backend
gantt
title 90-Day Mobile Launch Roadmap
dateFormat YYYY-MM-DD
section Phase 1: Discovery & Design
User Research :done, des1, 2025-05-01, 2w
Wireframes & Flows :done, des2, after des1, 2w
UI Prototypes :done, des3, after des2, 2w
section Phase 2: Architecture & Core Features
API Schema & Contracts :active, arch1, after des3, 2w
Data Model & Offline UX : arch2, after arch1, 2w
Shared Components Lib : arch3, after arch2, 2w
section Phase 3: MVP Development & QA
Feature Implementation : mvp1, after arch3, 4w
End-to-End Testing : mvp2, after mvp1, 2w
Usability Testing : mvp3, after mvp2, 2w
section Phase 4: Store Submission & Monitoring
App Store Prep : store1, after mvp3, 1w
Beta Release & Feedback : store2, after store1, 1w
Final Submission : store3, after store2, 1w
Monitoring & KPIs : store4, after store3, 2w
Phase 1 – Discovery & Design
- User Research & Personas
- Conduct 5–7 user interviews.
- Define personas, pain points, key journeys.
- Information Architecture & Flows
- Map core flows in Miro or Figma.
- Validate with stakeholders in a 30-min workshop.
- High-Fidelity Prototypes
- Use Figma Components and Variants.
- Link interactions for rapid user feedback.
Deliverables: Research report, persona docs, click-through prototype.
Phase 2 – Architecture & Core Features
- API Contracts
type User { id: ID! name: String! avatarUrl: String } type Query { currentUser: User feed(limit: Int!): [Post!]! } type Mutation { createPost(text: String!): Post! }
- Data Modeling & Caching
- Define normalized GraphQL schema.
- Implement offline sync with SQLite / AsyncStorage.
- Shared Component Library
- Build design-token‐driven UI kit in React Native.
- Publish as private NPM package with semantic versions.
Phase 3 – MVP Development & QA
- Sprint Streams
- Parallel iOS & Android feature sprints.
- Backend tasks slotted in API stream.
- Automated Testing
- Unit tests with Jest / XCTest / Espresso.
- End-to-end flows with Detox / Appium.
- Usability Validation
- Remote sessions via Lookback.io.
- Capture heatmaps & time-on-task metrics.
Phase 4 – Store Submission & Monitoring
- App Store Requirements
- Follow Apple’s Human Interface Guidelines.
- Prepare metadata: screenshots, descriptions, keywords.
- Beta Distribution
- Use TestFlight / Firebase App Distribution.
- Collect crash logs via Sentry; user feedback via in-app survey.
- Monitoring & KPIs
- Track crash-free users, DAU, retention curve.
- Set alerts on crash regressor or performance regressions.
Conclusion
A senior-only, sprint-focused approach compresses mobile launch into 90 days without cutting corners. With clear phases, deliverables, and QA gates, you’ll ship a production-ready app—and get it into user hands fast.
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