Junk
I tried to download when I first bought it unsuccceszful then one day out of the bleu it worked , not reliable I put it in a basket , a week or so ago we went for a hearing test , we bought a $3000 unit give or take , waiting for the custom mos lung , I decided to give it another try just to see , I can download the olive but not the app , in case you wonder I charged the unit for more than 1/2 day . It is a useless piece of junk .