Keep in mind also that software available via the fruit company is also loaded with trackers, they just don't tell you about them. g* is the same way. Aurora store, while being a mirror of g* gives you that extra bit of information to let you know when there is a known tracker in the software, but IMO not nearly enough information to make software available from there safe. F-Droid is a great source (despite the few very ignorant rants trying to claim it isn't safe).