[iOS] $0 - Tunable - Music Practice Tools (Was $4.99) @ iTunes

Tunable app for iOS devices is now available for free, the app price dropped from USD $4.49 to $0. Interested people can get this app from AppStore. It seems to have a good user ratings. Android app has no price drop.

It features:

Tuner
• Highly accurate (1/100 of a cent) and responsive
• Especially suited for wind instruments, strings, and voice with note detection from Tuba to Piccolo (24hz to 15khz+)
• Large, colorful tuning indicator clearly shows when in tune (green fills the screen)
• Clear, visual tuner with note, octave, cents (+-), and frequency (Hz) display
• Tuning history to see how well you’re sustaining notes over time
• Adjustable A=440 reference tone
• The change between equal, just, Pythagorean, and 18 other tuning temperaments
• Adjustments for the beginner, intermediate, and advanced playing abilities
• Vibrato settings for practicing with vibrato.

Tone and Chord Generator
• Chromatic Tone and Chord Generator with multiple tone options and sustain
• Auto Octave rounding for easy note access

Metronome
• Large number display and visual flash to see the downbeat, subdivision, and pulse
• Adjust tempo, beats per measure, and subdivision
• See tempo markings to quickly jump between standard tempos
• Tempo Tap (tap metronome center to set a tempo)

Other
• Transpose notes to any instrument
• AppleTV/AirPlay mirroring to an HDMI projector or TV on iPad2, iPhone4S, iPhone5
• Background Audio enables the metronome to continue playing when the screen is locked or closed.
• Works with clip-on microphones.