A spacer is a device designed to make an asthma inhaler easier to use.

A newly validated app called Rafi-Tone, developed by clinicians in the UK, makes using an inhaler with a spacer easier and more fun for young children with wheeze or asthma symptoms.

This is the spacer, which helps slow the flow of medication. A spacer is an empty tube that attaches to an inhaler on one end and a mouthpiece on the other.

Here is a detailed guide on how to use an inhaler and instructions for getting the most out of your medication.