A reliable and precise tuner for your instruments - with chromatic detection, flexible display modes, and the Circle of Notes to tune by ear on Android, iOS, and Windows.

Available on

Free Multi-platform Chromatic Mode Circle of Notes

Fine Tuner app preview showing the tuner interface

Fine Tuner - A Reliable and Precise Tuner for Your Instruments

Fine Tuner is a high-performance tuner that supports a wide range of instruments, with both standard and alternative tunings. From chromatic note detection to the interactive Circle of Notes, it gives musicians a precise and flexible way to tune visually or by ear.

Fine Tuner iOS interface showing precise tuning with frequency display and needle indicator

Chromatic Mode

Automatically detects all played notes and supports both standard and alternative tunings, especially for guitars and basses.

4 Display Modes

Switch between precision, graphical, expanded, and spectrum views depending on how much visual detail you want while tuning.

Circle of Notes

Tune by ear with an interactive tool that lets you play notes from octaves 1 to 7 and explore major, minor, and other chords.

Deep Customization

Adjust reference frequency, temperament, notation style, accidentals, deviation tolerance, and gain for a setup that matches your instrument.

Operating Modes

Automatic Mode: Detects notes automatically within the selected tuning range.
Manual Mode: Allows manual selection of the note to tune using the note selector.
Circle of Notes: Play and listen to notes and chords to tune by ear.

Display Modes

Precision View: Default precision range of +/-50 cents, with a needle indicating the position relative to the target frequency.
Graphical View: Default precision range of +/-500 cents, with a graph to track tuning adjustments.
Expanded View: Displays a wider range up to +/-1000 cents, ideal for visualizing large deviations.
Spectrum: Analytical view displaying the frequency spectrum in real time, allowing detailed observation of harmonics and sound distribution.

Customization Options

Reference Frequency: Adjustable between 400 Hz and 480 Hz, with a default value of 440 Hz.
Temperament Selection: Choose between Equal Temperament, Pythagorean, or Meantone according to your musical style and instrument.
Deviation Tolerance: Adjustable to set the desired tuning precision.
Note Display Type: Choose between standard or Latin notation.
Gain Adjustment: Microphone sensitivity calibration for optimal note detection.
Accidental Display: Option to show sharps (#) or flats (b).

Note Display

The main detected note is displayed centrally, along with adjacent semitones for better reference. It also shows the target and current frequency, as well as the difference in cents for precise tuning.