Piano Tuner is a 12-note chromatic scale strobe tuner application thatutilizes audio input devices such as built-in microphone, line-in, andiSight.
Strobe tuners are extremely accurate compare to regular tuners with aneedle or LEDs. The slightest difference between the actual pitch andthe ideal pitch accumulates over time and appears as a movement on thestrobe tuning meter.
Piano Tuner can be used by someone who wants to learn how to tune apiano by using a tuning lever and also be used by a professional pianotuner to help the tuning process.

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