This superb tuner App from TC Electronics is an emulation of their PolyTune tuner pedal - the world's first polyphonic tuner. Like its physical counterpart, this great little App lets guitarists to see the state of tune of all six strings at once! You simply strum all strings and see instantly which, if any, need tuning... then when you play a single note the display changes automatically to a conventional needle-style LED display.

At under $5 from the Apple App store, this is a fantastic tuner App for any guitarist - a great standby for gigging guitarists and an ideal way of trying out the multi-phonic tuner technology if you're thinking of buying the TC Electronics PolyTune pedal.

Polyphonic Guitar Tuning

With PolyTune, you simply strum all strings on your guitar or bass at once, and it will immediately tell you which strings need tuning! This cutting-edge tuning technology revolutionizes the way you tune and does what seems impossible - tuning all strings simultaneously! It's as simple as strum - tune - rock, and allowing you to get in tune fast, and back to playing.

The PolyTune also includes other tuning features such as:

- Adjustable reference pitch
- Plus/minus 1 cent tuning accuracy
- Standard chromatic tuner function with 0.5 cent accuracy
- Stream-mode (pseudo-strobe)
- MonoPoly - automatic detection and switching from single string (mono) to multi-string (polyphonic) mode
- Saved Preferences. From pitch reference to tuning mode, it saves all settings even after it is powered down.

PolyTune App Technical Specifications

Tuning Accuracy: +/- 0.5 cent
Reference Pitch: A4 = 435 to 445Hz (1 Hz steps)
Colorblind mode
Retina display graphics

Input: iPhone/iPod internal microphone* or input jack
(*Note: for iPod touch an external microphone is needed)