Bass Tuner BT1

JSplash Apps

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About this app

Bass Tuner BT1 is a chromatic tuner for low notes on bass guitar, double bass, bassoon, bass clarinet and trombone. Use your device microphone to read the note, frequency and cents as you play. Follow the pitch-history graph and compare the sound of your instrument with an audible reference tone.

A tuner for low instruments
Use it as a bass guitar tuner to check one string at a time, or follow a held note on double bass. On bassoon, bass clarinet or trombone, sustain a single note and watch the reading after the attack. The chromatic display follows the pitch you sound, so you can use the same controls for strings, woodwinds and brass.

Read the tuning information
The note name identifies the detected note. Frequency gives a numerical reading of the sound, and the cents display shows its deviation relative to the note. Watch these together while making a small adjustment. Check that the app is detecting the intended note before continuing, especially when other sounds are nearby or the instrument has a strong attack.

See how a note develops
The pitch-history graph shows movement over time. It can help you compare the initial sound with the sustained part of a note, or watch how the reading changes as you adjust a string. Continuous graph options let you choose how the trace is presented. You can listen to the instrument while using the graph as a visual reference.

Compare by ear
A 12-note reference-tone keyboard provides audible pitches with three selectable octave positions. Choose a note to hear a reference, then compare it with the sound of your instrument. Use the keyboard before checking the microphone reading, or return to it when an audible starting pitch is useful during a practice session.

Choose a reference that fits
The A4 reference frequency can be adjusted to match the reference pitch you are using. Note-name settings change how notes are labeled. The in-tune range setting adjusts the band used for the interface's tuning indication; it does not select an alternate bass tuning or establish a numerical accuracy guarantee.

A bass practice workflow
- Set the A4 reference frequency you intend to use
- Allow microphone access for sound detection
- Play one clear, sustained note
- Read the note name, frequency and cents deviation
- Watch the history as the note settles
- Adjust a little and check the note again
- Use a reference tone when you want to compare by ear

For bass guitar or double bass, let each open string ring separately and adjust it in small steps. When playing bassoon, bass clarinet or trombone, listen for a steady tone and use the graph to observe its pitch over the length of the note. A quiet practice space helps the microphone pick up the note you intend to check.

Useful alongside regular playing
Check your pitch reference before a rehearsal, after moving an instrument or between practice exercises. An audible reference can help you begin with a note you recognize, while the visual display lets you follow a small change. The graph gives you a way to observe a held note without treating one instant as the whole sound.

Keep the job focused
Bass Tuner BT1 brings a chromatic pitch display, note history and reference tones into a bass-oriented tool. It is useful when the task is to compare a low note with a target and make your own adjustment. The controls are organized around that tuning workflow, with settings for the reference and the way information is displayed.

The app includes ads and offers an in-app purchase to remove them. Microphone access is required for pitch detection. The reading depends on the sound reaching your device and its audio hardware. Choose the reference frequency and note-name convention that match your music practice.

Start with a reference tone to hear the target, then play it and compare the cents reading. On a transposing instrument such as bass clarinet, compare the sounding note with the concert-pitch target. Give each note time to settle before checking the next.

Ratings and reviews

Overall I think it is a good app, just that once your start to get to notes below A flat 0, even if the hertz value goes lower, the note displayed stays at an A flat 0. Would be better if it would also display these lower notes, but all in all a good app.

Blown away, finally a bass specific tuner geared towards picking up the lower frequencies. Guitar tuners rarely work. So glad I found this.

Nice tuner. Works for guitar also. Easy to get exactly in tune, not just close.

What’s new

• Updated bass pitch detection and smoothed the live note, frequency and cents readouts.
• Refreshed the tuning screen and reference-tone keyboard with three octave positions.
• Pitch history tracks each note and octave. Continuous Graph keeps it moving between notes.
• The trace now defaults to 4 dp and is adjustable from 1–8 dp.
• Set A4 calibration, sharps-only note names and a ±5, ±10 or ±15 cent in-tune range. Toggle the green overlay or hide the tone generator.