Does What It Says!
I have been using this app on my iPhone for a couple years. Not long ago I found it in the Mac App Store and decided to try it. It works great and syncs up just fine with my phone. What is really nice is that I don’t have to use every carriers individual app. This one take care of all tracking no matter what service is delivering. I highly recommend this app if you need to track shipments from various carriers and on multiple devices.
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Parcel - Delivery Tracking