How to use

How to use

1) Plug into phone headphone jack

2) Press start

3) Blow into device

4) Tracked & 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.