Horrible
Literally all of the notes you have to pay for if you want to detect. They’re are so many better apps but this one is the least effective and doesn’t work.Developer Response
We’ve made improvements. Now the app can detect all notes and intervals for free within 7 days, and users can fully experience the features of this app.Avoid
Useless unless you spring for the in-app purchases. It will only let you detect either very high or very low notes in it’s free mode. Confusing instructions and interface. I really have no idea if it works properly because you have to pay in order to even use it once in a normal environment.