Text Based MIDI Sequencer

  • Textquencer is a text-based MIDI Sequencer. It creates MIDI sequences from the plain text!

    Each letter in the alphabeth triggers a note in the scale you are working.

    • Letter A triggers the Note C (the first note) in the C-Major Scale
    • Letter B triggers the Note D (the second note)
    • Letter C triggers the Note E (the third note)
    • Letter H triggers the Note C but an octave higher

AUv3 MIDI Sequencer.

Custom Character Mapping

  • You can map emojis, non-English letters and punctiations to custom MIDI notes in the settings menu.

    A custom character can trigger either a specific MIDI note you want.

    Or it can trigger a specific note in the scale, like the first or second note in the scale.

    Spaces, punctiations and other characters put rests in the sequencer unless they are custom mapped.

Custom character mapping.

Always get musical results

  • You can randomize the velocity and gate length of each step in the settings menu.

    Textquencer's music theory engine offers more than 110 scales.

    You can also use your custom scales that you created in ScaleBud 2!

    The sequencer can run in very wide range from the whole notes to 64th notes.

Music theory engine.

Take advantage of the AUv3 Plugin

  • Textquencer runs as standalone app as well as AUv3 MIDI Plugin.

    You can create AU presets and use AU parameters of the AUv3 plugin.

    You can control or even automate every AU parameter of Textquencer.

    The standalone version of Textquencer supports Ableton Link.

More than 90 AU parameters for automation.

Download for iOS

Open source

Textquencer offers its core componets on Github.
They are all shared libraries for iOS, macOS and tvOS platforms, written in Swift.

Music Theory

A music theory library with Note, Interval, Scale and Chord representations in Swift enums.


Fully custumisable and editable knob with rotary, horizontal and/or vertical gesture recognition.


Free library for iOS.

Other Apps

There are other great music theory apps available.


A music theory app that shows you lots of scales and chords with lots of features.


A music theory app for guitar, bass or any kind of instrument player with frets.


A powerful chord progression app with built-in MIDI sequencer.


MIDI Sequencer and Arpeggiator for iOS.

Chord Detector

Mac Status Bar App.


AUv3 MIDI Music Theory Keyboard for iOS.


AUv3 MIDI Sequencer for iOS.


AUv3 MIDI Rhythm Generator for iOS.

ArpBud 2

AUv3 MIDI Arpeggiator.

ChordBud 2

AUv3 MIDI Chord Sequencer.


AUv3 MIDI Recorder.


AUv3 Techno Bass Lines.


AUv3 MIDI Sequencer.


AUv3 MIDI Generative Sequencer.

ScaleBud 2

AUv3 MIDI Keyboard.


AUv3 MIDI Sequencer.


Multitrack Polyrhythmic Sequencer.


MIDI CC Sequencer.


AUv3 MIDI Sequencer.

In Theory

AUv3 MIDI Keyboard.

Your feedback is important for us.

Drop us an email.