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The Confidence Flutter SDK provides feature flag evaluation for Flutter applications on iOS, Android, web, and desktop platforms. Flags resolve once according to the evaluation context, and values read from a local cache for fast access.

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Features

  • Cross-platform: Single SDK for iOS, Android, web, and desktop
  • Local caching: Flag values cached locally for instant access
  • Automatic apply events: Tracks flag usage
  • Managed context: Automatic visitor ID and platform context

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Installation

Install via the Flutter CLI: 
flutter pub add confidence_flutter_sdk

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Quickstart

import 'package:confidence_flutter_sdk/confidence_flutter_sdk.dart';

void main() async {
  final confidence = ConfidenceFlutterSdk();

  // Setup with API key
  await confidence.setup("your-client-secret");

  // Add context (optional)
  await confidence.putContext("targeting_key", "user-123");
  await confidence.putContext("country", "US");

  // Fetch and activate flags
  await confidence.fetchAndActivate();

  // Get flag value
  String flagValue = await confidence.getString("my-feature-flag.message", "default");
  print('Flag value: $flagValue');

  // Track custom event
  confidence.track("event-name", {});
}

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Resources

GitHub repository

Source code, examples, and full documentation

pub.dev package

Flutter package documentation

Context

Configure evaluation context

Apply events

Understand flag assignment tracking