I'm reading this a few days afterward, and want to make a couple of points.
First, let's agree that Spotwalla just places data points on a map. Those points come from a data feed from SPOT, SWConnect, Bubbler, or a few other devices or apps. SWConnect and Bubbler depend on cellphone connection and a data plan.
My points are these:
First, if you're riding on pavement, there aren't that many places where you're out of cell phone range, especially in the eastern half of the US. If you're in one of those areas -- deep in the woods, or in a narrow mountain valley -- you're SOL if you crash no matter what comm system you have or how many folks are riding with you. Even the revered SPOT satellite transponder is useless in very steep canyons. If you are in a non-cell area, SWConnect stores your location 'pings' and sends them all at once, accurately placed, when cell service is restored.
(
Note: There is a nice riding section of Virginia and West Virginia where cell service is prohibited due to US national security interests.
Click here for details.)
Second, SWConnect (and I assume Bubbler) are free to load and free to use. Others are not.
Third, I've used SWConnect with Spotwalla extensively and have noticed no significant increase in my data usage between months with many moto-trips, and months with few moto-trips.
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Before you believe Spotwalla is only semi-useful, you should check coverage maps for your cell provider in the area where you intend to ride. Here are a couple of links:
Verizon,
AT&T,
T-Mobile, and
Sprint.
I can't find any way to estimate my SWConnect data usage, but can guess that it depends on sending pings to Spotwalla every 5 minutes, every 7.5 minutes, or every 10 minutes. Again, I found no significant difference in my data charges during months with heavy and light SWConnect usage. And, most of my non-moto data use is via Wi-Fi connections at home or at the office, which don't show up on my cell phone bill.
Perhaps there is somebody on FJRiders that can provide a quantitative estimate for data usage. (Hello? HELLO??? Is there anybody out there?)