Subscription is for the InReach two-way communication feature only. No one is going to allow you to communicate (send and receive text messages) via satellites without paying for it! For just the GPS functions there is no subscription required, and that applies to any GPS unit, even the GPS included in your smart phone.
For that reason I will not purchase one
Agree with "deserteagle56" here -
Just to clarify there is no subscription to use the GPS as a GPS. This is just for the inReach aspect of the device.
I've used SPOT, inReach, satellite phones and personal beacon locators (PBL) and for two way satellite communicating all need a subscription. I think the personal beacon locators (PBL) do not but you only get SOS feature upon purchase which is really all they are designed for.
From Garmin's website:
"You’ll need an active satellite subscription to access the Iridium® satellite network
for inReach device functionality, including tracking, messaging, weather forecasts and interactive SOS."
So, I am buying the GPS but not activating the inReach until I need it...if I ever need it.
So, no subscription upon purchase. Just going to use as a very large and modern GPS.
"Jeep or Tacoma" hope that sheds some light on things...
Erik