According to Deloitte, smartphone penetration in Australia is at almost the highest level in the world, at 88% in 2017. They’re so useful I reckon penetration among FAers should be 100%. Here are just three apps I have on my phone that are particularly useful considering that I have FA (there are lots of different versions of each of these you should be able to find one that’s free. they are following Flashlight Heart rate monitor Sound level app