About this template
Mobile apps are software with two extra constraints: dual-platform development and app-store approval. Apple's review queue is usually 1–3 days now but can stretch to a week, and rejection on a launch-week submission can shift the whole launch. This 6-month template covers a typical first-version app for iOS and Android with a backend API, with realistic time for both platforms and app-store submission.
How a 6-month mobile app build breaks down
Discovery and design
User research, feature list, scope cut. Wireframes for every screen. High-fidelity design for primary flows. Design system: colors, typography, components. iOS and Android often share design language but follow each platform's conventions (tab bar vs. bottom nav patterns, etc).
- User research and interviews
- Feature list and scope cut
- Wireframes (every screen)
- High-fidelity mockups
- Design system
- Prototype clickthroughs
Backend foundation
API design (REST or GraphQL). Database schema. Authentication (email, OAuth, Sign in with Apple — required if you offer other social sign-ins). Push notification infrastructure (APNS for iOS, FCM for Android). File storage. Hosting and CI/CD.
- API design
- Database schema
- Authentication
- Push notifications (APNS, FCM)
- File storage
- CI/CD pipeline
iOS development
Swift or React Native. Build core flows first, polish later. Use TestFlight for internal builds from week 4. Test on real devices — simulator does not catch performance, battery, or network-edge issues. Plan for at least 3 supported iOS versions.
- Project scaffold
- Core flows
- Secondary features
- iOS-specific polish (haptics, animations)
- TestFlight internal
- TestFlight external beta
Android development
Kotlin or React Native (same codebase). Match the iOS feature set. Test across multiple Android versions and device sizes — fragmentation is real. Material Design 3 components. Use Google Play internal testing track for builds.
- Project scaffold
- Core flows
- Secondary features
- Android-specific polish
- Google Play internal testing
- Google Play closed beta
Test and polish
QA across devices and versions. Accessibility pass: VoiceOver (iOS), TalkBack (Android), dynamic type, color contrast. Performance: cold start, scroll, memory. Beta cohort of 50–200 testers across both platforms.
- QA across devices
- Accessibility pass
- Performance optimization
- Beta cohort feedback
- Bug fixing
App-store submission and launch
App-store assets: screenshots (multiple device sizes), preview videos, description, keywords. Privacy nutrition labels for iOS. Data safety form for Android. Submit to both stores at the same time — Apple review is 1–3 days; Google Play is usually a few hours. Plan a buffer week for rejections.
- App-store screenshots and copy
- iOS privacy nutrition labels
- Android data safety form
- Submit to App Store
- Submit to Google Play
- Address review feedback if rejected
- Launch in both stores
Tips from shipped mobile apps
- Submit to both stores 2 weeks before public launch. The buffer absorbs rejections without shifting launch.
- Test on real devices from week 4. Simulators do not catch battery, performance, or network-edge issues.
- Add Sign in with Apple if you offer any other social sign-in. App Store guidelines require it.
- Plan privacy nutrition labels early. Last-minute label discovery slows submission.
- Use the platform conventions. iOS-on-Android-tab-bar is a small but real reviewer flag.
Frequently asked questions
How long does mobile app v1 take?
4–9 months for native iOS + Android, depending on feature scope. This template targets the 6-month middle case. Cross-platform (React Native, Flutter) shortens by 20–30%.
How long is App Store review?
1–3 days for most submissions in 2026. First submissions are sometimes longer. Plan 1 week of buffer for potential rejections.
Should I launch both platforms at the same time?
Yes if possible — splitting press across two launches reduces impact. Submit both, sync the actual public launch date.