Stop Fighting Your Workflow. Start Building the Tools to Master It.

A pragmatic approach to building custom Flutter DevTools extensions. Learn to create tooling that solves your project's unique challenges.

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Complete the course in a single workday.

Does any of this sound familiar?

You're a senior developer, but some challenges are universal.

You constantly break your development flow by manually logging in and out to test different user roles, turning a quick check into a tedious, multi-step process.

Toggling a feature flag or testing a new config value requires a code change and a hot restart, slowing down your feedback loop significantly.

Verifying analytics events means digging through messy `print` logs, making it difficult to confirm that the right data is being sent in real-time.

You know there must be a more efficient way to debug, but feel stuck with the default tools and unsure how to build a better, custom workflow.

What other developers are saying

What You'll Build: Four Practical Tools

This course is centered around hands-on projects that solve real-world problems. These serve as templates for your own custom tooling.

Login Tool

Automate logging in and out with different user accounts. A simple utility that saves hours of tedious, repetitive work over a project's lifetime.

Remote Config Tool

Change remote config values like feature flags or UI colors on the fly, directly from DevTools, without altering source code or needing a hot restart.

Analytics Viewer

Create a live, clean feed of analytics events to easily verify that your tracking is implemented correctly and firing with the right data payloads.

Bonus Debug Page

Build a standalone web app that can connect to and execute arbitrary Dart code in your running Flutter app—perfect for complex debugging.

Course Curriculum

Gain a complete understanding of the DevTools extension ecosystem.

  • The three types of extensions: app, standalone, and package.
  • Correct folder structure and project setup with provided scripts.
  • Two-way data flow: app-to-tool and tool-to-app communication.
  • Registering and calling methods between your app and extension.
  • Sending messages from your app and listening for them in your tool.
  • The complete development loop for creating and testing your tools.

Become the developer who creates the tools, not just uses them.

This skill elevates your contribution from writing features to improving the entire team's development process. Equip yourself with the ability to build custom solutions that make development faster and less error-prone.

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