Building a Local-First Flutter App with Drift, SQLCipher, and Riverpod 3.0

Building local-first apps is becoming the standard for modern mobile developers. Users expect high performance, offline functionality, and strict privacy controls over their personal data.

In this article, we will look at the core architecture patterns for building a secure, offline-first application in Flutter using Drift (SQLite), SQLCipher (local database encryption), and the new Riverpod 3.0 code generator.

The Security Challenge

For health, fitness, or financial logs, storing raw text on a device is a vulnerability. If a device is compromised, database files can be easily extracted.

To solve this, we initialize Drift on top of an encrypted database connection using SQLCipher. Here is the conceptual flow:

1. Retrieve a secure key (e.g., from Flutter Secure Storage).
2. Open the SQLite database connection using EncryptedDatabase.
3. Generate Drift tables automatically using @DriftDatabase.

State Management with Riverpod 3.0

We decouple UI from logic using Riverpod's new generator syntax. For example, to track the active workout state:

@riverpod
class ActiveWorkout extends _$ActiveWorkout {
  @override
  WorkoutState build() => const WorkoutState.idle();

  void startWorkout(WorkoutPlan plan) {
    state = WorkoutState.running(plan);
  }
}

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You can download and check app on play store too..
https://play.google.com/store/apps/details?id=com.aigymmentor.app