Been using APRSdroid – APRS Client for a couple months now. It’s basically a ham radio app that lets you track your position and send/receive messages. Pretty solid if you’re into that kind of thing.
Here’s what you do: you can see what’s going on with APRS with the hub view or on a map. There’s also messaging – you can send notes to other users. And the position tracking is pretty cool, it’ll show where you are and nearby stations.
Look, if you’re a ham radio operator, you’ll probably like this. It’s not perfect – sometimes the UI can be a bit confusing – but overall it does the job. Worth checking out if you want an easy way to get into APRS.