Penguin Tuner - Version 1.0 Penguin Tuner makes tuning your guitar fly by! Just play a note, and Penguin Tuner will automatically display the musical note you are playing. Penguin Tuner will even tell you how close you are to being in-pitch with that note (how flat or how sharp you currently are), by pointing either right or left. When you've hit the correct note with your guitar, the "needle" (or fish) on Penguin Tuner's belly will turn bright green and glow. Good for all ages, Penguin Tuner is the ideal replacement for your old tuner; it's awesome when you show up to your friends house for a jam session, and you forgot your guitar tuner; and it also means that you will never have to take another trip down to the music store, just to get your guitar in tune, again!