"Stereo Test - Quick Settings Tile" is a free and open-source app to figure out which earbud is left or right.
You have three ways to know which earphones are left or right.
・Opening the App
・Using Quick Settings Tile
・Using the Widget
Features
・You can play the test voice in the App, Quick Settings Tile and Widget.
・You can play specific frequency for tuning.
・You can play sweep sound.
・You can see the definitions for right and left if you need.
・Dark theme is supported.
・Translated into 30 languages.
Development
・This app is developed using Xamarin Forms and is open source!
- https://github.com/kurema/EarphoneLeftAndRightAndroid