Store temporary data in Flutter
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The most common and best way to store temporary and less size data in Flutter is through Shared Preferences
Shared Preferences
Shared Preferences is used for storing key-value simple data types. It is suitable for storing small amounts of temporary data such as user informations such as user name , ids, mobile number, email id or session-related information. Shared Preferences is easy to use and works across different platforms. You can store and retrieve data using a unique key.
but if you deal in finance or payment related apps then best option is Flutter Secure Storage
Flutter Secure Storage
Flutter Secure Storage is a Flutter plugin that provides a secure storage solution for sensitive data such as tokens, passwords, bank details or secret keys, API keys, or user credentials. It encrypts the data and stores it securely on the device’s keychain (iOS) or keystore (Android). This plugin store and retrieve data securely very fast.
| Features | Shared Preferences | Flutter Secure Storage |
|---|---|---|
| Description | Key-value storage solution for simple data types | Secure storage solution for sensitive data |
| Data Encryption | Not encrypted | Encrypted using platform-specific secure storage mechanisms |
| Data Persistence | Data persists even when the app is closed or the device restarts | Data persists even when the app is closed or the device restarts |
| Data Types | Supports basic data types (e.g., String, int, bool), you can also store other datatype as a String | Supports basic data types (e.g., String, int, bool) |
| Security | Data is stored in plain text and can be accessed by other apps or users on the device | Data is encrypted and stored securely, protecting against unauthorized access |
| Use Cases | Storing simple configuration settings, user preferences | Storing sensitive data such as authentication tokens, API keys, or user credentials |
| Platform Support | iOS, Android, Web, macOS, Windows, Linux | iOS, Android, Web, macOS, Windows, Linux |
| Plugin Dependency | flutter_shared_preferences | flutter_secure_storage |
You can click below to check implementation of each packages :-
You can choose either Shared Preferences or Flutter Secure Storage based on your specific requirements and the platform you are targeting for your app’s release.
If you have any query, please comment below, we will reply soon
