pscratch

https://pscratch.com

This was inspired by the SC500 portable scratch instrument being out of stock. Originally it used the OP-Z as a MIDI control input, so you could scratch with the tiny little spinny encoders.

Scratch and cut sounds on your phone. Includes drums and samples, you can add audio files or record from your microphone.

I really like the Help overlay. And the draggable window at the top. You can drag either edge, or the number inputs, or edit the numbers directly.
Sound quality still needs work, both the audio glitchiness when scratching, and the recording quality.

Some early small features, like the red tip of the rotating indicator used to touch the red indicator in the main waveform halfway through the rotation, but that was much less flexible for longer sections of audio.

pscratch