The Nura app is used to create your hearing profiles and change your other settings, such as your Immersion level and button functions.
Your personalised hearing profiles are stored locally onto your NuraTrue. The hearing profile you most recently applied to your NuraTrue, along with your other settings, will be remembered by your NuraTrue, no matter what other device (mobile, desktop, or tablet) you’re connecting to, be it via Bluetooth or cable.
This means you don’t need to have the Nura app running on your mobile device for your personalised sound and other settings to be applied.