Or the equivalent in OutdoorActive, which is derived from ViewRanger. Both will record your position but will require a data signal to report it to anyone else. If there is a break in mibile phone coverage, historical data will be sent once the signal is re-established.
In the good old days, I used to leave a map of my intended route at home and then text to management the time I passed significant waypoints plus news of anything affecting progress. That way, if I was overdue, people would at least know where not to look.