Here's how you can download the USPS Mobile app free for your iPad, iPhone, iPad mini or iPod Touch.
1. Go to the USPS Mobile app preview page in iTunes (or tap the link on your iOS device to install the app directly).
2. Click the View in iTunes button.
3. Click the Free button to download the app.
4. Sync your iPad, iPhone, iPod Touch or iPad mini with iTunes to install the app.
USPS Mobile by the United States Postal Service is an app that lets you access many popular USPS.com utilities. You can locate a post office, find a zip code, figure out shipping charges, buy supplies, scan in labels or schedule pickups. You can even have your mail held by the US Postal Service.