I'm always glad when an app with confusing buttons has 'tooltips' implemented that pop up when you long-press a button. I think long-pressing for more info on

I'm always glad when an app with confusing buttons has 'tooltips' implemented that pop up when you long-press a button. I think long-pressing for more info on touch screens feels quite intuitive, similar to how hovering feels intuitive when you have a mouse pointer.