For tracking multiple deliveries
17Track allows you to track up to 40 packages at a time across multiple delivery services. The free iOS-only app syncs with more than 220 carriers and can send notifications regarding any status changes.
Deliveries is a no-frills option with a detailed map view that charts where each package has been. The $5 iOS-only app can be set to automatically add delivery dates to your calendar.
Parcel, another free iOS app, provides an expandable map, a delivery countdown, and support for 320 carriers. If you want to track more than three packages at once, though, you’ll have to pay $3 a year.
Slice is an online shopping assistant that tracks price changes as well as packages. Like most others, it can pull tracking numbers from emails in your inbox. It will even send you automatic refunds for recently purchased items that have dropped in price.