Chromtuner: Chromatic Tuner
Native chromatic pitch tuner
Only for Mac
$6.99
Mac
Pitch-perfect tuning. ±1¢ YIN accuracy on Core Audio, 15 presets, 8 temperaments, strobe display — offline, always in your menu bar.
Chromatic Tuner is a native tuner built for players who can hear the difference. It reads your instrument through Core Audio at full sample rate, detects pitch with the YIN algorithm, and settles on a reading in under 50 ms — accurate to ±0.14 cents on pure tones and ±1 cent in real-world playing.
No account. No subscription. No network connection. Just a tuner that lives in your menu bar and gets out of the way.
PRECISION THAT HOLDS UP
• YIN time-domain pitch detection with a 4096-sample window
• ±0.14¢ on pure tones, ±1¢ real-world
• Sub-50 ms perceived latency via Core Audio
• Full pitch range: A0 (27.5 Hz) to C8 (4186 Hz)
• ~22 Hz update rate with median + exponential smoothing — a stable needle that never lags a bend
FOUR WAYS TO SEE PITCH
• Warm LED meter for the stage
• Analog needle for the classic feel
• Live waveform view
• Peterson-style rotating strobe for the bench
EVERY TUNING YOU PLAY
• 15 instrument presets: guitar (standard, drop D, DADGAD, open G, half-step down, 7-string), bass (4- and 5-string), violin, viola, cello, double bass, ukulele, mandolin, banjo — plus full chromatic mode
• Capo tracking through fret 11
• ±11 semitone transpose
• Tap any string for a clean reference tone
BEYOND EQUAL TEMPERAMENT
• 8 temperaments: equal, just, Pythagorean, ¼-comma meantone, Werckmeister III, Kirnberger III, Vallotti, Young II
• A4 calibration from 349 to 500 Hz — with one-tap 415 / 440 / 442 and automatic detection
YOUR INTERFACE, AT FULL RESOLUTION
• Built-in mic or any USB audio interface and Aggregate Device
• Full sample rate through Core Audio — no downsampling, no auto-gain mangling your signal
• Hot-plug detection: connect an interface and it just appears
LIVES ALSO IN YOUR MENU BAR
• Compact flyout one click away — tune, switch input, get back to playing
• Optional launch at login
• Full window when you want it, invisible when you don't
MAKE IT YOURS
• Seven built-in Signature looks — from Boutique Pedal to Neon Stage
• Customize chassis, fonts, meter style, colors, and density
• Light and dark, or follow system settings
PRIVATE BY DESIGN
• Runs fully offline — zero network calls
• No account, no telemetry, no ads
• One-time purchase, no subscription
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Bug fixes and improvements.
The developer, Clemens Posch, 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 Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Clemens Posch
- Size
- 2 MB
- Category
- Music
- Compatibility
Requires macOS 14.0 or later.
- Mac
Requires macOS 14.0 or later.
- Mac
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © Clemens Posch

