I have done a series of talks recently on APRS.
- APRS Turns 35, BayCon 2019, SARA 2019, SCCARC 2019, FARS 2019
- APRS for ARES Work, SLV ARES, 2019
This page provides links to APRS clients you might want to download for Android, iOS, and Windows. I have no direct affiliation with the authors of these applications.
APRSdroid (Android)
PocketPacket (iOS)
aprs.fi (iOS)
APRSISCE/32 (Windows)