Yes. That is correct.

IGCDroid updates every minute provided you have cell coverage. Typical server delays result in a 5 min delay. No annual service fee. The update is also a full trace not just a single position.

InReach and spot use satellite coverage, so can send status in remote areas with no cell coverage. I can't.

As I said earlier, better AND worse.

As others said, xcsoar+skylines is totally free. Your choice.

My plan is to use IGCDroid for everyday comms and a PLB for real emergencies. PLB is better than spot for real search and rescue.

What I loose not having spot is casual comma in non cell coverage areas.

Alan