Stamps 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.

If you only have first-ounce stamps, this app can tell you how many of them to apply and how much extra you would be paying.

Do you know that applying a third additional-ounce stamp to a letter only covers up to 3.5 ounces? Do you know that afterwards you must use the rate for flats up to 13 ounces? (After 13 ounces, mail with stamps applied must be presented at a post-office counter.)

Do you know the size requirements for letters and flats? What about the surcharge rules for letters or when package rates apply to a flat?

All this information is in this app.

You can specify when a letter or flat does not meet requirements by selecting an option on the main page.

With the tools and information in this app, you can avoid applying too-many stamps and therefore save money.

The postage rates are current as of the time this app is released. You can adjust and save higher stamp costs (up to 50 cents more). I plan to release updates with new postage rates.

This app is based on my web page Postage Without Additional-Ounce Stamps at The fee for this app is $0.99.

Keywords: U.S., US, postage, calculator, stamps, letter, large envelope, flat, package, size limits, surcharge, requirements
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What's New

Updated postage and package rates due to rate changes.
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Additional Information

Eligible for Family Library
February 3, 2017
Current Version
Requires Android
1.6 and up
Content Rating
Offered By
David Wincelberg
301 S. Wetherly Dr. Beverly Hills, CA 90211
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