> For the complete documentation index, see [llms.txt](https://enappd.gitbook.io/ionic-5-react-capacitor-full-app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://enappd.gitbook.io/ionic-5-react-capacitor-full-app/setup/running-the-app.md).

# Running the app

## Run the app on Browser

Once you have the [initial setup](/ionic-5-react-capacitor-full-app/setup/initial-setup.md) done, it's time to run your app. First we'll run the app in development environment. In development environment, your app runs in a browser (of your choice). It is recommended to make all changes and development while running the app on browser . Running on device while developing will be too time consuming.

To run the app on browser, run

```
$ ionic serve
```

on your command line, inside your project folder. This will build the project and deploy it on a `localhost` url (usually it is `localhost:8100`). Your command line will look like this

![](/files/-LrEGx6pq27A6-IwJ8TN)

The initial deploy process will take some time when it creates "chunks" of code pieces. Once you see `compiled successfully` , you are good to go. Your browser window will open automatically and load the app in a full screen view.

Sometimes, the CLI does not open the browser automatically. In such case, open your browser and type URL `localhost:8100` to start the app. 

To change the app to a device view, right click anywhere on the browser and choose `Inspect Element`and choose device mode. The app will look like this in `device mode` 

![](/files/-LrEH-_0ODQ745mntLZr)

More about browser development tools can be found out in following links

* [Chrome Dev Tools](https://developers.google.com/web/tools/chrome-devtools/device-mode/)
* [Firefox Dev Tools](https://developer.mozilla.org/en-US/docs/Tools)