Tap the area of interest to see a short description.
Shows the frequency corresponding to the note A of the fourth octave (A4) taking into account calibration, transposition, and temperament. When pressed, it opens a window where you can set the frequency of A4.
Shows the current audio signal display mode. When pressed, it toggles the display mode.
Enables/disables noise suppression mode. When noise suppression is enabled, the tuner automatically builds and refines the surrounding noise profile during periods when the instrument being tuned is silent. This way, the noise suppressor adapts to changing background noise.
Opens the tuner temperament settings window.
Opens the window for selecting instruments and various tunings for them. The current instrument name is displayed under this button.
Opens the window with information and general tuner settings.
Shows the current transposition in semitones and the key name. You can change the transposition in the A4 frequency settings window (the A4 = 440 Hz button above).
Shows the name of the current instrument and the chosen tuning. You can change the current instrument/tuning using the Presets button above.
A set of numbered note buttons corresponding to the selected instrument/tuning. A short press plays the note taking into account transposition and temperament. A long press enables continuous playback.
A linear scale of deviations from -50 to +50 cents. The center (0) corresponds to perfectly hitting the target note in 12-TET. Small marks represent 5-cent steps, larger marks represent 10-cent steps.
A vertical line at the center of the screen – the ideal pitch position for each note in 12-TET.
The red vertical line – the ideal pitch position of the current note when a temperament is enabled. The label at the bottom shows the amount of offset introduced by the active temperament for the current note.
The slider indicator shows the current position of the recognized note of the incoming audio signal on the deviation scale. The indicator is green if the pitch is exactly on target, yellow if the deviation is around 5 cents, red if it exceeds 10 cents, and gray if no sound is detected.
In Strobe: Off mode, the tuner displays a stabilized real-time waveform of the audio signal.
Shows the calculated frequency of the incoming audio signal, taking into account how the human ear perceives sound and possible inharmonicity of the signal; it corresponds to the indicator's position on the deviation scale. For inharmonic strings, this frequency is often slightly higher than the fundamental.
Shows the input audio signal level, audio processor performance, and CPU load.
Shows the recognized note name and octave, considering calibration, transposition, and temperament. Tapping this area cycles through the note name display format: sharps, flats, or mixed.
Shows the deviation from the ideal target position in cents. Tapping this area toggles the rounding format: whole cents or tenths of a cent. For a perfectly tuned note, instead of zero deviation, the equals sign (=) is shown.
In Strobe: On mode, the audio signal is displayed as a strobe bar. If the fundamental frequency is below the target, the strobe rectangles move to the left. If it is above the reference, they move to the right. In Strobe: Auto mode, the strobe bar automatically turns on when the deviation is less than 15 cents. The Waterfall mode is a variation of the strobe display with a vertical/diagonal trail.
When the "Show fundamental pitch heatmap" option is enabled (in settings), a blue vertical line is drawn at the position corresponding to the fundamental frequency. The brighter and thinner the line, the more stable the sound and the higher the recognition accuracy. When two or more strings sound in unison, each string is shown with its own blue line.
In Partials mode, five strobe bars correspond to the first five harmonics of the sound. The movement of each bar indicates whether its harmonic is in tune with the corresponding note. For a mathematically perfect sound in 12-TET, the third harmonic's strobe bar moves to the right, and the fifth one moves to the left. Inharmonic strings usually improve the tuning of the fifth harmonic but worsen the others. The relative amplitudes of the harmonics are shown next to the corresponding note names.
A set of note buttons from C2 to B4. Each button plays its note (considering calibration, transposition, and temperament) when tapped. The final playback frequency is displayed in the bottom-right corner.
Resets calibration and transposition to zero, setting A4 to 440 Hz.
Anchors A4 to an external reference sound. A short press accepts the external sound as the reference for the nearest A note. A long press accepts the external sound as the reference for any nearest note. Example: if the external sound is 1000 Hz, a short press takes it as A5 and sets A4 to 500 Hz; a long press takes it as B5 and sets A4 to 445.45 Hz.
Shows the current A4 frequency without considering calibration or transposition. It takes temperament into account only if Set A4 before temperament is disabled. Tapping it opens a window for manual entry of the value. The - and + buttons change A4 in increments of 1 Hz.
Enables the mode in which the temperament is applied after A4 is locked to a specified value. If this mode is enabled and the temperament sets a nonzero offset for A4, the resulting frequency of A4 will differ from the one specified above. If the mode is disabled, changing temperaments does not make A4 “jump.”
Shows the name of the active temperament. The number below shows the corresponding offset in cents for the note selected in the upper rows.
Shows the frequency of the note selected in the rows above, given the specified A4 and temperament, but without considering additional calibration or transposition.
Shows the frequency of the note selected in the rows above, considering the specified A4, temperament, and additional calibration, but without considering transposition. The + and - buttons shift all calculations by one cent up or down.
Shows the final frequency of the note selected in the rows above, considering all parameters: A4 setting, temperament, additional calibration, and transposition. The + and - buttons shift all calculations by one semitone up or down.
Shows the offsets of the selected temperament as a graph. The horizontal line represents zero offset. The vertical lines correspond to ±20 cents.
Adds a new Sweetening temperament. The offsets are specified in the same order in which the notes appear for the chosen instrument/tuning. Enter the name, followed by a colon, then list the offsets relative to 12-TET in cents. Use space, tab, or a new line as separators. Do not use commas.
Adds a new Stretching temperament. The offsets are specified in sequence for each note, starting from the specified one, and do not depend on the chosen instrument. Enter the name, followed by a colon, the starting note, and a set of offsets relative to 12-TET in cents. Use space, tab, or a new line as separators. Do not use commas.
Adds a new Temperament type. Exactly 12 offsets must be specified, starting with the note C, and they do not depend on the selected instrument or octave. Enter the name, followed by a colon, and exactly twelve offsets relative to 12-TET in cents. Use space, tab, or a new line as separators. Do not use commas. Here you can also specify interval fractions. For example, instead of -1.96 for the note F, you can enter 4/3.
Opens the window for editing the selected temperament.
Deletes the selected temperament.
A scrollable list of temperaments (orange edge for Temperament, blue edge for Sweetening, green edge for Stretching). Tapping activates the selected temperament.
Selects the root note from which the offsets of the chosen Temperament type are applied. At the top of the screen, this appears as a horizontal scrolling of the offset graph.
Toggles between showing all instruments and only favorites.
A scrollable list of instruments. Tapping activates the instrument preset and loads the available tunings into the list on the right. If your instrument is not listed, try using the universal “Chromatic” preset and, if necessary, submit a request to add a new preset for your instrument.
A scrollable list of available tunings for the selected instrument in the left list. Tapping activates the set of notes/strings, which will appear on the main screen as note buttons. At the bottom of the list is a button to request adding a new instrument/tuning.
Shows whether this tuning is in the favorites list. Tapping adds or removes the tuning from the favorites list.