The demo account is completely free and you do not risk any real funds while using it.
How can I switch between the demo and live accounts?
On the mobile app
To switch to demo, please go to 'Account' > 'Switch to Demo'.
To switch to your live account, please go to 'Account' > 'Switch to Live'.
On the web platform
To switch to demo, click on 'Live' in the top-right corner and select 'Switch to Demo' from the drop-down.
To switch to your live account, click on 'Demo' in the top-right corner and select 'Switch to Live' from the drop-down.