The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From Poelstra Audio:
Use your ears as your primary musical tuning device! TuningEar Light is a limited version of TuningEar, which is also available from the App Store.TuningEar allows you to train your ears to hear the difference between "in tune" and "out of tune". Of course, practice is the best teacher, but you can't always carry your music instrument around, so TuningEar assists you to exercise in those "lost" moments when your instrument is at home. TuningEar works by letting you hear two notes. It's up to you to decide whether they are in tune or not.The full version offers these additional features:-Multiple instruments-More intervals-Higher difficulty settings-No ads*** Rated as "Killer App" on apps4idevices.com ***