In 2026, the way we build Flutter apps has completely changed. You no longer start by opening VS Code and typing widgets line by line.
Instead, you describe your app in plain English, an AI agent designs the entire UI, another agent writes and wires up the code, and you only guide the process.
That’s exactly what Google’s Stitch + Antigravity + Flutter combo delivers.
Today I’m going to show you the complete end-to-end workflow: from a simple prompt to a fully functional Flutter app in under a few minutes. This is the new skill every Flutter developer needs in 2026.
Why This Workflow Matters Right Now
Stitch is Google’s AI design agent. You give it a text prompt or even a rough sketch, and it instantly generates production-ready UI designs and structured metadata.
Antigravity is Google’s agentic IDE — a next-gen VS Code fork powered by Gemini. It doesn’t just suggest code; it plans, runs terminal commands, installs packages, writes tests, and iterates until the app works.
When you connect Stitch output to Antigravity via the new MCP (Model Context Protocol) connectors, the AI agent converts the design into real Flutter + Dart code.
This is what the community is calling “vibe coding” or “agentic development.” The developer is still in control — you review, tweak prompts, and make final decisions. But the heavy lifting is handled by agents.
Perfect for rapid prototyping, MVPs, or even production features.
Prerequisites & Setup
Before we build:
Flutter 3.27+ (stable)
Google account with access to Antigravity (antigravity.google)
Stitch access at stitch.withgoogle.com (Google Labs)
Step 1: Install Antigravity (it’s a separate IDE). Download from antigravity.google and open it.
Step 2: Enable MCP connectors in Antigravity settings (this links Stitch directly).
Step 3: Create a new Flutter project in Antigravity or create an empty folder and open it on Antigravity; it will handle every other setup.
Live Build Demo — Let’s Build a Real App. We’re going to build a simple ‘Daily Habit Tracker’ app using only prompts.
First, open Stitch:
Prompt:
Create a clean, modern mobile habit tracker application UI designed to help users build consistent daily routines and maintain positive habits. The design should feel minimal, motivating, and calming, encouraging users to stay consistent with their goals. Use a modern, accessible color system with a primary accent color and soft neutral backgrounds. Support both light mode and dark mode. Use rounded cards, subtle shadows, smooth spacing, and simple iconography to create a polished mobile experience. The application should include bottom navigation with the following sections:
Home / Today Screen
* Display a daily streak counter at the top with a visually engaging streak indicator (flame or progress ring).
* Show today’s habits list in card format.
* Each habit should include:
* A checkbox or toggle to mark completion.
* Habit name.
* Optional small progress indicator.
* Include a progress summary showing how many habits are completed for the day.
* Add a motivational quote section at the bottom to inspire users.
Habits Screen
* Display a list of all created habits.
* Each habit card should show:
* Habit name
* Current streak
* Completion progress
* Provide an “Add Habit” floating action button.
* Allow editing or deleting habits.
Progress / Statistics Screen
* Display weekly and monthly habit completion charts.
* Show streak history and completion percentages.
* Include visual elements like line charts or progress rings.
Profile / Settings Screen
* Display a circular user avatar.
* Show user statistics such as:
* Total habits created
* Longest streak
* Total days completed
* Include settings such as:
* Dark mode toggle
* Notification reminders
* Habit reminder times
Design Style
* Minimalist and modern mobile UI
* Rounded cards and soft shadows
* Smooth spacing and readable typography
* Friendly icons and subtle animations
* Clean bottom navigation bar
* Consistent spacing and hierarchy
Stitch instantly generates the full UI design + metadata. Now select the screens generated by Stitch and click on Export — then select MCP
Now copy the Prompt and move to Antigravity:
Open the Agent Tab and paste the prompt from Stitch
After Antigravity is done downloading all the screens, then you can give it an instruction of what to build e.g
Use the UI layout generated from Stitch and build a Flutter application using Dart.
The project should follow Clean Architecture and separate presentation, domain, and data layers.
Use the Riverpod for state management. Ensure UI components are separated from business logic and follow a clear architecture project structure.
Watch the magic afterward. By the way, the AI Agent will ask for permission to run some commands; make sure you go through and approve accordingly.
After 10–12 minutes, run flutter run and the fully functional app appears on your emulator.
Best Practices & Pro Tips
Key lessons from using this daily:
Always start with a clear, detailed prompt in Stitch (include platform, theme, accessibility).
In Antigravity, use the ‘Manager Agent’ mode and give it one task at a time.
Review every generated file — AI is fast but not perfect yet (especially complex state logic).
Combine with your existing skills: Use Riverpod, GoRouter, and Impeller optimizations from my earlier videos.
Limitations: Native plugins and heavy custom logic still need human oversight.
Pro move: Save your best prompts as reusable skills in Antigravity for future projects.
This workflow is gaining traction in the Flutter community right now because it lets you go from idea to a working app faster than ever.
Quick pause before we finish, if you’re serious about mastering AI tools like this, join my free Flutter + AI newsletter. Every week, I share the exact prompts, workflows, and early access to new agent skills that I test before they hit YouTube. Completely free, no spam — just the most relevant stuff for Flutter developers. https://techwithsam.dev/newsletter — I’d love to see you there!
This is the new reality of Flutter development in 2026 — Stitch for design, Antigravity for agentic building, and you as the conductor.
Don’t forget to join my Free Newsletter: https://techwithsam.dev/newsletter
Samuel Adekunle, Tech With Sam YouTube
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