The best apps for staying safe out of range

Lists of apps for hikers, overlanders and road trips, by what each is good at. LastBar is on them, and says so.

The best overlanding safety apps Apps for overlanding and 4x4 travel that help when you are far from help: offline maps, campsites, emergency locations, satellite messaging and where the signal ends.
The best hiking safety apps Apps that make a hike safer: offline trail maps, sharing your plans, giving your exact location, and finding signal when you need to call for help.
The best apps to find cell signal Apps that show where your phone has signal: crowdsourced coverage maps, tower maps, signal meters, and an app that guides you to the nearest bar offline.
The best offline map apps for road trips Map apps that keep working when the signal goes: offline navigation, offline guides for remote roads, and an offline map of where the signal is.
The best safety apps for South Africa Safety apps for travelling in South Africa: emergency help and panic buttons, offline maps for remote roads, exact locations, and where the signal ends.
The best safety apps for Australia Safety apps for the outback and the bush in Australia: calling Triple Zero with your location, hazard warnings, offline maps and where the signal ends.
The best safety apps for New Zealand Safety apps for tramping and road trips in New Zealand: trip plans with an emergency contact, mountain weather, offline maps and where the signal ends.
The best safety apps for the UK Safety apps for walking and wild places in the UK: Ordnance Survey maps offline, an exact location for 999, weather warnings and where the signal ends.