Hi, there's a

Divider

composable for horizontal dividers. Will there be a counterpart for vertical?

Same

Divider

should work too

The source

@Composable
fun Divider(
    modifier: Modifier = Modifier,
    color: Color = MaterialTheme.colors.onSurface.copy(alpha = DividerAlpha),
    thickness: Dp = 1.dp,
    startIndent: Dp = 0.dp
) {
    val indentMod = if (startIndent.value != 0f) {
        Modifier.padding(start = startIndent)
    } else {
        Modifier
    }
    Box(
        modifier.then(indentMod)
            .fillMaxWidth()
            .preferredHeight(thickness)
            .background(color = color)
    )
}

looks like it's only applicable for horizontal dividers. Will check for vertical. I'm fairly new to able to judge from source code though

Take a look to this codelab https://developer.android.com/codelabs/jetpack-compose-layouts#9