Early nineties desktop, or a green LCD
The whole interface is drawn a pixel at a time, in the style of an early nineties desktop. Have it in grey, or behind a green LCD.

Pick a look
The Look menu switches between the two looks, and turns the Visualizer on and off. Everything is scaled in whole pixels, so every line stays crisp on every iPhone and iPad.

Built in tips
- Sections: drag grip to reorder, drag the right edge to adjust loops, hold to rename, duplicate or delete.
- The grid: drag it sideways.
Questions
Does the look change the sound?
No. The look is purely visual; the four channels sound the same in both.
Try it in Chiptune Sequencer: C.H.I.P.
Free on the App Store for iPhone and iPad. Requires iOS 17 or later.