An instrument often used to tune musical instruments is the tuner, specifically electronic tuners. These devices can detect the pitch of a sound and help musicians adjust their instruments to the correct tuning standard, such as A440. Some tuners feature visual indicators, like LED lights or displays, enabling players to see whether their instrument is sharp or flat compared to the desired pitch. In addition to electronic tuners, many musicians use tuning forks, pitch pipes, or apps on smartphones that serve a similar function for precise tuning.