you want to be alone. you think there's someone approaching so you are trying to hear footsteps. or you have suspicions that someone is following you. or you might just want to snoop on others' conversations on the local train to home. What do you use? Stealthy. This app combines the latest noise-canceling technology and AI to understand and eliminate noises you don't want to hear and amplify the sound of the thing you want to hear without breaking the clarity of the sound. perfect for people who want to be very aware of his/her surrounding, whether it be the Australian outback or your local commute.