Good, but could be better

This app is quick and accurate at distinguishing American currency. Unfortunately, I am often in a store when I need to use it and voiceover is not readily audible. The app needs a toggle button for vibrate- e.g. 1 vibrate for $1, 2 vibrates for $5, and so on. The app would absolutely earn a 5* rating if the vibrate option were included in a future update.

Real DD about NantMobile Money Reader, v2.5