Lowercase really shines when you want to take notes free-form and then be able to share those notes out into the world. You can easily make a note public & even cooler than that you can turn a lowercase note into a presentation with just a few clicks.
Here's an old example I pulled up -> https://www.lowercase.app/@matt/p/1f6c83d5-2869-4024-a687-fc...
In my editor I was able to just group parts of my note into logical slide sections and then publish.
Edit: you can move through the slide show with your left and right arrows.