https://github.com/filiph/sloth_app

Intentionally slow Flutter app
https://github.com/filiph/sloth_app

Last synced: 3 months ago
JSON representation

Intentionally slow Flutter app

• Host: GitHub
• URL: https://github.com/filiph/sloth_app
• Owner: filiph
• Created: 2020-01-22T10:46:22.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2022-02-03T10:55:04.000Z (over 3 years ago)
• Last Synced: 2025-04-13T18:18:52.505Z (3 months ago)
• Language: Dart
• Size: 24 MB
• Stars: 23
• Watchers: 3
• Forks: 7
• Open Issues: 2
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

README

        
# sloth_app

An intentionally slow Flutter app.

![The sloth_app in action, showing two pages with Performance Overlay turned on](https://user-images.githubusercontent.com/919717/91081239-a79f2c00-e5fb-11ea-9888-15b52789aa77.gif)

## But, why?

Performance optimization is a gnarly topic. Performance issues seldom exist in isolation, and they

often only manifest in really complex (and closed-source) apps.

I ([filiph@](https://filiph.net)) made this app to address this. It's full of performance issues

we see in real-world apps, but without the cruft of full apps, and isolated from each other.

It has been a great resource to me and others when teaching about Flutter performance.

### Videos

The app makes appearance in the following videos:

- [Flutter Europe 2020](https://www.youtube.com/watch?v=SQcmrl_NkqY)

- [Meetup Online Presentation](https://www.youtube.com/watch?v=Ogq8QFp9Ea8)

- [Flutter Day 2020 DevTools session](https://www.youtube.com/watch?v=nq43mP7hjAE)

## Structure

The app is structured as one big `PageView` that goes from left to right. Every 3rd page

has a performance issue. The other two are there to cleanly isolate one performance

issue from another (unless I _don't_ want to isolate).

Pages are color-coded, so that there's a simple correspondence between what you see and the code.

For example, the code to the blue page is found in `blue.dart`.