Best Tuner App Out There – insTuner - Chromatic Tuner with Tone Generator Review

This app is incredibly accurate; I've used it for three years, and it stacks up perfectly against professional tuning equipment. A $5 well worth it! (iPod 5th gen; iOS 8.4.1)
Review by U.S.S. Endeavour (NCC-1702) on insTuner - Chromatic Tuner with Tone Generator.