Some guitarists prefer to tune their instrument by ear. If you’re one of them, you may find Guitar Tuner Pro to be a useful tool. This app for your Android device provides a simple way to hear accurate tones for every string on your guitar–no matter what note you want that string tuned to.

Whether you play in standard tuning, like to get heavy with dropped D, or enjoy experimenting with alternate tunings of many varities, Guitar Tuner Pro makes it easy. Just choose a note from the dropdown menu for each string, or select a preset tuning configuration. Preset tunings include:

• Standard
• Open E
• Open G
• Open D
• Open C
• Dropped D

When you’ve selected the correct tuning, touch the image of the string you want to hear, and compare its pitch to the sound coming from your own guitar. In this way, the app is also useful as an ear trainer. You can learn to recognize guitar pitches and become a better listener and more intuitive player.