How to use

How to use

1) Plug into phone headphone jack

2) Press start

3) Blow into device

4) Perfectly managed asthma

No headphone jack?

No headphone jack?

The device works on all phones. But, if your phone does not have a headphone jack, you can use a headphone jack adapter.

For iPhones, we sell them on the product page, click here.

For Android phones, you'll need to find a genuine USB-C to headphone jack adapter on Amazon or Ebay.

How to blow

How to blow

Use in a well lit area

Use in a well lit area

For the best results, use the device in a well lit area. Proven more accurate than mechanical peak flow meters, as explained in the research article below.