Postage for U.S. Letters, Large Envelopes and Packages) 1.5
Calculates how many stamps to apply to a letter, a large envelope, which is also called a flat, or a package. This app only covers items that are mailed in the United States to destinations in the United States.
With the tools and information in this app, you can avoid applying too-many stamps and therefore save money. (Released on 3-Feb-2017.)