Is there a dictionary app that lets you browse by letter?

I would like to have a dictionary app that I can just go through letter by letter. Hoping to just start at the beginning and go all the way through without having to use search like most dictionary apps.

Are there any dictionary apps for mac or iPhone that allow you to do this? If there are apps that will hold your place that's even better.

Not just asking about free apps.

Try dictionary and thesaurus by index