Invoice Template for Flutter Developers
Flutter development billing has a unique complication: clients assume cross-platform means half the price of native — when it's really comparable in cost because both platforms still need separate QA, store setup, and device-specific fixes. My biggest billing challenge is scoping state management architecture, which clients don't see as a deliverable but determines how maintainable the codebase is.
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What to include on your invoice
Flutter developers bill across UI, logic, and deployment categories. UI Widget Development covers building custom Flutter widgets — screens, components, bottom sheets, dialogs — with proper theming using ThemeData and responsive layout constraints. State Management Implementation refers to setting up Riverpod, Bloc, or GetX architecture, including providers, notifiers, and state flow design for scalable app logic. Backend API Integration covers consuming REST or GraphQL APIs using Dio or http package, with model classes generated via json_serializable and proper error handling. Firebase or Supabase Integration includes authentication, Firestore or database setup, Cloud Messaging for push notifications, and crash reporting. App Store Submission covers building release binaries for iOS and Android, submitting to the App Store and Play Store, and managing review responses.
How to price your work
Flutter developers price full app builds from $5,000 to $40,000 depending on feature complexity. Hourly rates: $60–$160/hr. Simple MVP builds with 5–8 screens and one backend integration: $5,000–$12,000. Complex apps with offline sync, custom animations, and multiple integrations: $15,000+. App store submission is often a separate $500–$1,000 fixed-fee engagement. Monthly maintenance retainers for OS updates and bug fixes: $500–$2,000/month.
Getting paid faster
Flutter clients who are early-stage startups often tie their product launch to investor milestones. Use payment milestones tied to testable deliverables: 30% on wireframe approval, 30% on internal TestFlight/beta build, 40% on app store submission. This gives the client clear progress visibility and ensures you're compensated for each phase regardless of what happens after. Never submit to the app store before the final payment is processed.
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