# Firebase Analytics

Use when logging analytics events, setting user properties, configuring default event...

- Repository: https://github.com/evanca/flutter-ai-rules (668 stars)
- Category: Engineering
- License: MIT
- Last updated: 2026-10-30
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add evanca/flutter-ai-rules --skill firebase-analytics -g -a claude-code -y`
Codex: `npx skills add evanca/flutter-ai-rules --skill firebase-analytics -g -a codex -y`
Cursor: `npx skills add evanca/flutter-ai-rules --skill firebase-analytics -g -a cursor -y`
Gemini CLI: `npx skills add evanca/flutter-ai-rules --skill firebase-analytics -g -a gemini-cli -y`
Claude Code plugin marketplace: `/plugin marketplace add evanca/flutter-ai-rules`

## Description

Use when logging analytics events, setting user properties, configuring default event parameters, building funnels, or adding screen-view tracking.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# Firebase Analytics Skill

This skill defines how to correctly implement Firebase Analytics in Flutter applications, covering setup, event logging, user properties, and data collection best practices.

## When to Use

Use this skill when:

* Setting up and configuring Firebase Analytics in a Flutter project.
* Logging predefined or custom analytics events.
* Setting user properties or default event parameters.
* Implementing screen view tracking with GoRouter or Navigator observers.
* Building conversion funnels or tracking user flows.

---

## 1. Setup and Configuration

```
flutter pub add firebase_analytics
flutter run
```

```dart
import 'package:firebase_analytics/firebase_analytics.dart';

// After Firebase.initializeApp():
FirebaseAnalytics analytics = FirebaseAnalytics.instance;
```

- Initialize Firebase before using any Firebase Analytics features.
- Analytics **automatically logs** some events and user properties, no additional code needed for those.
- On iOS, if your app does not use the IDFA (Advertising Identifier), use the IDFA-free Analytics dependency (`FirebaseAnalyticsCore` under Swift Package Manager, or `FirebaseAnalytics/Core` under CocoaPods) instead of the default `FirebaseAnalytics` dependency to avoid App Store review questions about advertising identifiers:
  - **Swift Package Manager:** set `FIREBASE_ANALYTICS_WITHOUT_ADID=true` when building (`FIREBASE_ANALYTICS_WITHOUT_ADID=true flutter build ios`).

### Add Navigator Observer for Automatic Screen Tracking

```dart
MaterialApp(
  navigatorObservers: [
    FirebaseAnalyticsObserver(analytics: FirebaseAnalytics.instance),
  ],
);
```

For GoRouter, log screen views manually on route changes:

```dart
GoRouter(
  observers: [FirebaseAnalyticsObserver(analytics: FirebaseAnalytics.instance)],
);
```

### Verification Checklist

The rest: https://github.com/evanca/flutter-ai-rules/blob/HEAD/skills/firebase-analytics/SKILL.md