It is an application that trains perfect pitch.
By training every morning or every few hours, you will acquire perfect pitch.
If you use it as an alarm clock with an alarm app or an app that automatically starts the app at a specified time, you can train for absolute pitch instead of relative pitch.

By repeating training every few hours, it becomes effective training between relative pitch and absolute pitch.

Whether or not you can acquire perfect pitch depends on the individual, but after a few months of training, you will be able to feel that you have been able to get more points than when you started.

For details, please refer to the manual in the app.

When you start the app, you will hear a sound.
Press the switch of the note name on the screen that seems to be ringing.
If the answer is correct, OK is displayed and the sound of the next question is played.
If the answer is incorrect, NG will be displayed and the same sound will be played until the correct answer is given.
Hi Score is reset when you close the app.
■ Alarm clock setting
By using an application that automatically starts the application at a set time and automatically starts it, you can perform pitch training when you wake up for the first time.

Search example of an application that automatically starts the application at the set time
"android auto start"
"An application that automatically launches an Android application at a specified date and time"