When one runs out of moves in Candy Crush for iOS, what is the paying option for?

It shows a +5 number and a lollipop saying that I only need 1 more jellys and the price of $0.99

![enter image description here][1]

I'm surprised that they don't put more information about what it's being offered.


  [1]: https://i.sstatic.net/JDq4J.png