From Idea to App Store: The Complete Mobile App Launch Checklist

Mobile · 04 Apr 2026

Launching a mobile app is 40% building and 60% everything else. This is the checklist we use for every app launch — 47 items across 8 categories that stand between your idea and an App Store listing.

Most developers think about the App Store submission process in the last week. We think about it from day one. The apps that get rejected, crash on launch day, or disappear from search are almost always the ones that treated launch as an afterthought.

Category 1: Product & UX (Start at Week 1)

• Core user flows mapped and validated with 5+ real users before development starts
• App icon designed in all required sizes (iOS: 1024x1024, Android: 512x512 + adaptive)
• Onboarding flow designed — you have 3 screens to explain your app's value
• Empty states designed for all lists and data views
• Error states designed — what happens when the API fails?

Category 2: Technical Essentials

1. Deep link handling for all primary user flows
2. Push notification permission flow with clear value proposition
3. App performance: cold launch under 2 seconds, no frames dropping below 60fps
4. Offline mode handling — even if just showing a meaningful error
5. Crash reporting integrated (Sentry or Firebase Crashlytics)

Category 3: App Store Optimization

• App name: primary keyword in the first 30 characters
• Subtitle (iOS) / Short description (Android): secondary keyword, clear value prop
• Screenshots: show the app in use, not just UI screenshots on a white background
• Preview video: apps with preview videos get 35% more downloads
• Localized metadata for every market you care about

The day before launch is too late to start thinking about App Store Optimization. ASO starts the day you name your app.