dio vs Flame
Which should you use? A side-by-side look at what each one does, who it suits, what it costs, how hard it is to set up, and where each falls short.
Open source · MIT
A Dart/Flutter library for making HTTP network requests with interceptors, uploads, downloads, and timeouts.
The short answer
Choose dio if you need…
- Flutter app developers who need to call web APIs
- Dart developers building server-side or command-line code that makes HTTP calls
- Teams that want request interceptors or cancellable requests
- Projects that need file upload or download handling over HTTP
Choose Flame if you need…
- Flutter developers who want to add a game to an app
- Developers making 2D games in Dart
- Learners exploring game loops and component systems with a familiar language
- Teams that want optional bridge packages for physics, tile maps, or animation tools
Side-by-side
| dio | Flame | |
|---|---|---|
| Type | Library | Library |
| Price | Free and open source | Free and open source |
| Licence | MIT | MIT |
| GitHub stars | 12.8k | 10.8k |
| Setup difficulty | Beginner | Intermediate |
| How you get it | Install with a package manager | Install with a package manager |
| Main language | Dart | Dart |
| Last code update | 12 days ago | 4 days ago |
What each one is
dio
Dio is an HTTP client package for the Dart and Flutter languages, used by app developers to send requests to web servers and receive responses. According to its description, it supports global settings, interceptors, form data, cancelling requests, file uploads and downloads, timeouts, and custom adapters. This repository is the base repo; the actual package lives in a subfolder with its own instructions.
Flame
Flame is a game engine built on Flutter, the Google UI toolkit, and written in Dart. It provides common game building blocks such as a game loop, a component system, collision detection, input handling, sprites and animations, and effects. It is meant for developers who want to make games using Flutter instead of a dedicated game engine.
Best for
dio
- Flutter app developers who need to call web APIs
- Dart developers building server-side or command-line code that makes HTTP calls
- Teams that want request interceptors or cancellable requests
- Projects that need file upload or download handling over HTTP
Flame
- Flutter developers who want to add a game to an app
- Developers making 2D games in Dart
- Learners exploring game loops and component systems with a familiar language
- Teams that want optional bridge packages for physics, tile maps, or animation tools
Strengths
dio
- Covers common needs listed in the description: interceptors, timeouts, cancellation, uploads and downloads
- MIT licensed and maintained by the Chinese Flutter User Group (cfug)
- Has a large community following, with about 12,800 stars on GitHub
Flame
- Official bridge packages connect it to many tools, including Tiled, Rive, Spine, and Box2D physics
- Documentation, a browser-based examples site, and tutorials are linked from the README
- Active project with a large community on Discord and a recent push date
Not ideal for
dio
- People who are not writing Dart or Flutter code, since this is a Dart package
- Users looking for an end-user application; this repo is a developer library
- Projects that need features beyond what the README lists, since this README does not detail the full API
Flame
- People who need a full visual editor, since the README describes a code-first engine and does not mention one
- Teams building large 3D games, because the README calls the 3D package experimental
- Non-programmers, since it requires writing Dart code
Trade-offs
dio
- Breaking changes can happen in major and minor versions, so the Migration Guide should be read before upgrading
- The README is only an index; setup and usage details are in the linked package folders and at dio.pub
Flame
- Tied to the Flutter ecosystem, so it is not a good choice if you do not want to use Flutter or Dart
- The README notes that main-branch docs can be newer than the published docs site, so version mismatches are possible
- The 3D package is labeled experimental
Getting started
dio
Clone the repository (README gives no install command)
git clone https://github.com/cfug/dioFlame
Add Flame to a Flutter project
git clone https://github.com/flame-engine/flameFrequently asked questions
What is the difference between dio and Flame?
dio: A Dart/Flutter library for making HTTP network requests with interceptors, uploads, downloads, and timeouts. Flame: A game engine for building 2D games with Flutter and Dart. dio suits flutter app developers who need to call web apis, while Flame suits flutter developers who want to add a game to an app.
Are dio and Flame free?
dio: Free and open source. Flame: Free and open source.
Which is easier to set up, dio or Flame?
dio is easier to get started with (rated beginner); Flame is rated intermediate and usually needs more setup.
Is dio or Flame more popular?
dio has more GitHub stars (12.8k) than Flame (10.8k). Popularity isn't the same as fit — check which one matches your use case above.
What are other alternatives to dio and Flame?
Other options people compare them with include GetX, Bloc, chi, Godot, Phaser.
Keep comparing
Built from our catalogue entries for both products: open-source details come from each project's README (AI-assisted, refreshed weekly) and GitHub data; AI-tool details are editorial. Spotted something wrong? Let us know from either product's page.