# Composables
Source: https://signy.dev/examples/composables/
Functions that return signals, the Signy answer to hooks.
A composable is a plain function. It creates signals and effects, and because a component calls it from `setup()`, the component owns them and disposes them on unmount. There are no rules about call order, as there are for React hooks.
## Preview
[Open the page on its own](https://signy.dev/examples/composables/demo/index.html.md)
## Code
Save it as an `.html` file and open it in a browser. It loads Signy and Iris CSS from the CDN, so there is nothing to install or build.
**Show the full page**
```html
Composables - Signy example
```
## What it uses
- [effect() and onCleanup()](https://signy.dev/documentation/1/reactivity/effects/index.html.md)
- [setup()](https://signy.dev/documentation/1/components/lifecycle/index.html.md) as the place to call them
- [Signals](https://signy.dev/documentation/1/reactivity/signals/index.html.md) as return values