Hookpad: Note clusters in chords


is there a way to add note clusters as a chords in Hookpad? Or is it at least possible to create my own chords (so I can make them myself)?

Hi, unfortunately this is not possible. All melody voices are restricted to monophonic behaviour. Theoretically you can use all four voices to form a custom chord but with only four voices you won’t get a very big cluster.
There is also the harmonizer which can add second and third voices to each voice. But as the harmonizer is strictly in scale, you won’t get a real cluster this way either.
You can modify the chords with additional notes but more in a jazzy way so you won’t get a real cluster there either. I’m sorry.