iPhone Screenshots


*** Now offering the Buzz Feiten Tuning System available via in-app purchase! ***

D'Addario D'Tune is the quintessential digital tuner for iPhone brought to you by D'Addario & Company, Inc., he world's largest designer, manufacturer and distributor of musical instrument accessories.

Combining rapid and precise state-of-the-art pitch detection technology for iPhone OS with Apple's proven touch-screen controls, D'Addario D'Tune turns your iPhone or iPod touch into the ultimate portable instrument tuner. Dedicated modes for guitar, bass, violin, banjo and other stringed instruments offer the most reliable pitch measurement on any handheld platform. Whether using the iPhone's built-in microphone, an external mic or directly connecting your instrument, choose from four beautifully designed interfaces — Strobe, Needle, Digital or Classic — and watch as D'Addario D'Tune precisely captures the pitch of each string in real time. Presets include chromatic and standard tunings as well as common alternate tunings such as Drop D, DADGAD and Open G. Users can create and save their own tuning "Setups" for different setlists or instruments as well as their own custom tunings. On stage, in the studio or anywhere your music takes you, D'Addario D'Tune ensures you'll never miss a note.

D'Addario D'Tune is developed by Audiofile Engineering, a leading developer of audio software for OS X and iPhone.


• Powered by Audiofile Engineering's AETune™ pitch detection technology
• Unparalleled tuning accuracy
• Four elegantly rendered interfaces: Strobe, Needle, Digital and Classic
• Ability to create and save customized tuning setups
• Ability to create custom tunings
• Octave detection
• Only tuner for iOS to offer the Buzz Feiten Tuning System (available via in-app purchase)

Supports 15 Instruments
• Guitar
• 7-string Guitar
• 8-string Guitar
• Bass/Mandobass
• 5-string Bass
• 6-string Bass
• Violin/Mandolin
• Viola/Mandola
• Cello/MandoCello
• Ukulele
• Banjo

Tons of Tunings for 6-string Guitar including...
• Standard
• Drop D
• Open D
• Open A
• Open E
• Open G
• Double Drop D
• Mastodon
• Nick Drake

Tunings for 7-string Guitar
• Rock
• Jazz
• Breau
• Hunter

Tunings for 8-string Guitar
• Standard
• Fourths
• Hunter

Tunings for Ukulele
• Standard
• Standard (Low G)
• D Tuning
• D Tuning (Low A)
• G Tuning
• G Tuning (Low D)

Tunings for Banjo
• Standard
• C Tuning
• Double C
• D Tuning 1
• D Tuning 2
• D Minor
• G Minor
• G Modal
• Guitar
• Moonshine

Adjustable pitch reference
• 415 Hz (Baroque)
• 430 through 450 Hz
• 430.54 Hz (Scientific)
• 452 Hz (Old Philharmonic)
• 460 Hz (High Renaissance)


• D'Addario D'Tune requires an internal microphone (iPhone), external microphone such as Apple headset with microphone (2nd and 3rd generation iPod touch), or iPhone-compatible instrument cable

• 1st generation iPod touch does not support Apple headset with microphone

What's New

Version 2.0.2

D'Tune 2.0.2 resolves an issue that prevented the app from launching when no internet connection was available.

Ratings and Reviews

My Go-to for 7 Years


I've tried several tuners since I became an iPhone user; this is the only one with an accurate strobing function. It's the only accurate and easily readable one that I can name. Even Peterson's tuner has proven to be problematic and a money-making scheme. This is a simple and professional tuning app and nothing has proven to be better for almost s decade.

No tuning low strings


No tuning in low E and low B for guitar bass. :(

No longer works for iOS 11...




D'Addario & Company, Inc.
27.8 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2009-2015 D'Addario & Company, Inc.
In-App Purchases
  1. Buzz Feiten Tuning System $19.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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