AI Workflow · Step 3 of 5 — Development

AI-assisted Flutter development with Claude Code & Codex.

Traditional Flutter builds take 8–10 weeks of engineering time. Claude Code handles the predictable scaffolding, Codex sweeps refactors, and a senior Flutter engineer owns architecture and review. Result: production-grade apps in 3–4 weeks.

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2–3× velocity · Senior-engineer reviewed · You own everything

code Claude Code
memory Codex
verified_user Senior Flutter engineer
schedule_send Weekly working builds
Tools we use in this step

Two coding agents, one accountable engineer.

AI handles the labor of writing predictable code. A senior engineer owns the design, review, and accountability for every line that ships.

code

Claude Code

Primary coding agent

  • check_circle Screen scaffolding from approved Stitch designs via MCP
  • check_circle State management, routing, and integration glue
  • check_circle Long-context refactors that hold the whole codebase in one pass
memory

Codex

Refactor & multi-file transforms

  • check_circle Bulk refactors across many files when patterns shift
  • check_circle Edge-case bug hunts and one-shot transformations
  • check_circle Used as a second opinion on Claude Code's larger changes
verified_user

Senior Flutter engineer

Human-in-the-loop, every PR

  • check_circle Owns architecture, business logic, and integration design
  • check_circle Reviews and rewrites every AI-produced PR before it merges
  • check_circle Final accountability for performance, security, and quality
Inside the build sprint

From locked design to weekly working build.

1

Scaffolding

Claude Code builds screen skeletons, models, and routing from the locked design and PRD.

2

Integration & state

AI handles boilerplate; senior engineers wire APIs, auth, payments, and business logic.

3

Refactor & review

Codex sweeps for consistency; senior engineer reviews every PR before merge.

4

Friday demo build

Working TestFlight/APK shipped weekly with a written update and screencast.

What you get

What ships from the development phase.

smartphone

Production-grade Flutter app

iOS and Android from a single codebase.

rocket_launch

2–3× delivery velocity

8–10 weeks of traditional dev compressed into 3–4 weeks.

schedule_send

Weekly working builds

Friday TestFlight + APK + written update + walkthrough video.

lock_open

Full source code & docs

Repo, infrastructure, design files — you own everything.

FAQ

Frequently Asked Questions

No. Claude Code writes the predictable, repeatable layer — screen scaffolds, model classes, routing, integration glue, and tests. Senior engineers own architecture, business logic, performance-sensitive code, and final review. Every AI PR is reviewed and rewritten as needed before it merges.

They have different strengths. Claude Code's long context handles complex feature work end-to-end. Codex is excellent for multi-file refactors, edge-case bug fixes, and as a second opinion on larger changes. Using both gives us better coverage than picking one.

The raw output is a starting point, not a finished product. Every PR is reviewed and rewritten by a senior Flutter engineer before merge. The codebase you receive is indistinguishable from one written entirely by hand — except it took 2–3× less time to produce and is fully documented.

You do. Full source, infrastructure config, design files, and documentation are handed over at launch. There is no vendor lock-in, no proprietary framework, no rented platform — just a clean Flutter codebase you can hand to any developer.

Want AI-assisted Flutter velocity on your build?

Book a free 30-minute strategy call. We'll walk through how Claude Code and Codex apply to your specific project — and what a 3–4 week sprint looks like.