Application: Deliveries Pro v. 4.9.9 (1830)
App does not provide any tracking info for UPS, USPS, or China Post and only states "Status: None". However, for FedEx it provides detailed, up-to-date tracking information. Note: With respect to all carriers listed, the preceding statements pertain to in-bound packages.
Further, if I select a particular package, then access the the drop-down menu, and select "View in Browser", the page that loads for both UPS and USPS contains detailed, up-to-date, tracking information. Although, this does not work with China Post.
Also, with respect to UPS and USPS, as a work-around for the problem with the app, I can have both carriers send me updates, via both text and email, each time the status of the package they each have changes but, while those is better than nothing, I do not have the benefit of having the information pertaining to all packages consolidated in one place.
Additionally, I also have the app Package Tracker Pro and it does not have any problem with providing me with detailed, up-to-date, tracking information on my UPS and USPS packages, but it is not capable of tracking China Post packages.