The HotPaw inTuna Bass Guitar Strobe Tuner is a strobe tuner app that allows you to quickly and accurately tune the E, A, D and G strings (standard bass guitar tuning) on your guitar using the built-in microphone in your iPhone. The Bass Guitar tuner shows 4 simultaneous animated visual strobe displays, offering the ultimate ease and responsiveness in fine tuning your Bass Guitar to studio accuracy. Because all 4 strobe tuning displays are visible (and run in parallel), there is no need to wait for the tuner to first detect which note you are tuning, nor is there a long delay due to recovering from background noise.