Posti, Matkahuolto, DHL, UPS, FedEx, PostNord, Ärrä Packages and China packages tracking application which has tons of features to help track multiple packages at once. It has barcodes, barcode lists. See features yourself by trying it out. Github repository. You can join to participate at development! Supported couriers. Finnish Posti ja Posti DHL packages. China packages.
This application is totally safe for downloading. Nitramite is the creator of the app which can be found in the Business category. Google Play displays that Package Tracker is rated 4.5 by its users.