Guitar Tuner: Chromatic+
Ukulele, Bass, Violin & Banjo
Only for iPhone
Free
iPhone
Tune string by string: each string gets a check with its cents when it holds in tune, and a summary card appears when all six are done. Guitar chords added.
Guitar Tuner: Chromatic+ tunes your guitar string by string and tells you when every string is done. Play a string, watch the cents needle settle, and see a check appear on that string once it holds within 5 cents for 0.4 seconds.
▶ STRING BY STRING
• Each open string gets a check and its average offset in cents when it holds in tune
• A counter shows how many strings are done, e.g. 4/6 strings in tune
• When every string is done, a summary card shows the tuning, the time it took and each string's offset, and listening stops
• Tune again clears the checks for the next time you pick up the instrument
▶ AUTO OR MANUAL
• Auto follows whichever open string you are closest to
• Manual measures against the string you choose, handy when a string is far out and Auto keeps jumping to the neighbour note
• Switching to Manual picks the string nearest to what you are playing
▶ INSTRUMENTS AND TUNINGS
• Guitar: Standard EADGBE, Drop D, Open G, DADGAD
• Bass: Standard EADG and Drop D, with low-string detection down to the E1 and D1 open strings
• Ukulele: High G, Low G, Baritone, D tuning
• Mandolin: Standard GDAE, Celtic GDAD, Cross A, Octave
• Banjo: Open G, Double C, Sawmill, Open D, C tuning
• Violin: G D A E
• Chromatic: the nearest of all 12 notes, for cello, viola, wind instruments or your voice
▶ TUNE BY EAR
• Tap a string to hear its reference pitch
• Reference drone from C2 to C6 that loops until you stop it
• Pitch-stability meter scores how steadily you hold a note
▶ CHORD LIBRARY
• 12 common chord shapes each for guitar, ukulele, mandolin and banjo
• Tap a chord to hear it strummed at your A4 setting
▶ SETTINGS FOR YOUR BAND
• A4 calibration from 435 to 445 Hz
• Transpose from -6 to +6 semitones for capo and transposing instruments
• Live Hz and target Hz readout
▶ GOOD TO KNOW
Pitch is detected on the device from the microphone; audio is not recorded or uploaded. For the steadiest reading, play one clear note at a time in a quiet room and let the string ring. The app tunes one string at a time.
The app is available in 30 languages.
Ratings & Reviews
• String-by-string progress: each string gets a check and its cents when it holds in tune, plus a summary card when every string is done
• Manual mode now starts on the string nearest to what you play
• Bass: the low E1 and drop-D D1 strings are now detected
• Chord library: 12 guitar chords added
• Full app translation for Czech, Danish, Finnish, Hebrew and Dutch
The developer, heekyung moon, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- heekyung moon
- Size
- 51.6 MB
- Category
- Music
- Compatibility
Requires iOS 16.4 or later.
- iPhone
Requires iOS 16.4 or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
18+
- 18+
- Contains
Advertising
- Copyright
- © 2026 Moon