Select numerical value with +/- buttons or manually entering?

The design I'm working on has the user assigning a value to each item, then if the value is more than 1, a second dependent attribute appears (as shown). I want the numbers to be large and not default to an ugly and busy text box. However, the only solution I could think of is an even uglier and busier -/+ button combo which is also incredibly space expensive (and, I've found, nearly impossible to fit in mobile mode).

Is there a better way to do this?