[pct-l] GPS App question
Town Food
pctl at marcusschwartz.com
Thu Jul 12 03:09:30 CDT 2018
Halfmile's app works on both Android and iOS. I understand the iOS
version has an additional mode that displays a map, but I haven't used it.
As for GPS, my understanding is that all US cell phones have a full GPS
in them due to E-911 requirements. Many also support A-GPS, which helps
them get GPS locks faster, but does not replace real GPS. If your phone
didn't have a GPS, it would stop giving driving directions when you left
phone coverage on a long drive.
I used both Halfmile and Guthook's on my 2016 thru, and Halfmile was
generally my go-to, though I often looked at Guthook's for a second
opinion, particularly when I was hoping there were more tentsites or
water resources than Halfmile mentioned. I also used Guthook to read
its bulletin board of comments from hikers on each waypoint.
I also wanted to recommend OSMAnd, which has a lot of coverage of
non-PCT trails and roads near the PCT. This comes in handy at junctions
and on side-trips.
Hikerbot is new and has gained popularity recently, and I'd try that if
I were hiking soon as it has features I found myself wishing for in the
other apps.
Here're my impressions of the three I did use:
Halfmile's is a no-nonsense, all text, fast way for a skilled user to
get well-vetted information about the trail. It's conservative with its
choice of waypoints -- other apps will mention marginal campsites and
water sources that Halfmile skips.
So, if you were to just use Halfmile's app, you would be unlikely to
find yourself at an unusable campsite at the end of the day or a
dried-up water source when you're thirsty. You also wouldn't spend
excessive time filtering through data when planning your destinations
for the day. If you just want to hike and play it safe, Halfmile's data
is ideal.
The sparseness of the waypoints can be misleading, however. Sometimes
it will show no tentsites for many miles, making you think you should
make camp early if you see a tentsite. But, it might be blank because
the local terrain makes tenting easy in many places. There's no way to
know ahead of time.
Halfmile's app takes some getting used to. With no map, you can't tell
which way to go at a junction (though if you get a few dozen feet
off-trail it will tell you and point you towards the right trail). If
you don't like doing a lot of math with mile offsets, you need to learn
to use the "simulate position" function, which makes it act like you're
at another waypoint (e.g. the campsite you're planning on sleeping at
tonight). The descriptions of the waypoints are terse, and the layout
can be confusing.
I found it potentially-dangerously confusing that waypoints on spur
trails are included in the same list as waypoints on the PCT, and it
will tell you the distance to spur trail waypoints in a way that makes
it sound like they're on the PCT. For example, if you were at Highway
40, it would have a pink-shaded entry that said "North 4.11 mi Highway
80 Rest Area", which one might assume means that if you go 4.11 miles
North on the PCT, you'll reach the Highway 80 Rest Area. Actually, it
means you have to go some distance on the PCT, take a spur trail, and
some more distance on the spur trail, which together will add up to 4.11
miles when you reach the Highway 80 Rest Area. So, long story short,
it's important to understand that pink waypoints in Halfmile's app are
on spur trails.
Guthook's guide has a lot more features. It shows your position on a
map, which is intuitive. It has photos of many of the waypoints, and it
includes many of the more marginal water sources and smaller tentsites.
It also has a bulletin board on every waypoint, where users of the app
can leave comments. This is very useful for getting recent information
about unreliable water sources (it's not as reliable as the official
Water Report, but can fill in gaps in its data), as well as candid
information about businesses, suggestions about where to cross a river, etc.
However, most of the features require downloading data intermittently
(e.g. when you're in town), and doing so can be confusing and
unreliable. Different kinds of data can be downloaded from different
screens, so it's not straightforward to make sure that you have all the
data for an upcoming stretch. The bulletin board data is silently
downloaded in the background on occasion, so there's no way you can make
sure you're up-to-date with that. All of this is made more awkward by
the app's payment scheme, which divides the trail up into sections, and
makes other sections look empty if you have the wrong one selected.
I did notice that Guthook's track didn't always follow the official PCT
signage, though the differences were minor (e.g. a 100-foot shortcut
around a field). This might be an issue for sticklers.
It also drained my battery while it was not running, until I enabled a
power-saving mode on my phone that prevented certain background tasks
from running. Most Android phones have a feature in the Battery section
of the Settings program that will show you how much power each app has
consumed -- it might be wise to check this once in a while to make sure
Guthook is behaving well.
OSMAnd is a general-purpose mapping app, not meant for the PCT
specifically. It can give driving directions, for example. It differs
from programs like Google Maps and Apple Maps in that it works offline,
and uses crowdsourced map data. You need to download the map data
beforehand, one state at a time, and these files are large. But the
process is simple.
The resulting maps have much more thorough coverage than any of the
PCT-specific apps. Most PCT-specific apps only display a few side
trails, generally those with particularly interesting destinations.
OSMAnd's coverage is more like an atlas, covering everything (including
fairly thorough trail maps). If you ever need to navigate near, but not
on, the PCT, OSMAnd can help.
It can also optionally download geotagged Wikipedia articles (of which
there are many), and display them on the map. This can be nice if you
like to spend time in camp reading about where you were or where you'll
be, or plan detours if something interesting is nearby.
It can also display contour lines on the map, though this slows it down.
Going through all of OSMAnd's features is dizzyingly complicated, but
only a few are necessary for PCT purposes.
Not being a PCT app, the PCT is just another dotted line in OSMAnd. You
can download Halfmile's GPX track and import it into OSMAnd, however,
which will make the PCT a bright red line.
-=Town Food
On 07/11/2018 10:49 AM, Tim Umstead wrote:
> I used Halfmiles app on a Motorola phone and it worked just fine. Halfmile
> has the most up to date GPS points. In most cases Guthook data lags behind
> Halfmile's. Last year Guthook updated his points using Halfmiles data.
> With all the trails Guthook covers he goes a long time between updates.
>
> I use Guthooks app on the CDT. There are things I liked and disliked about
> both Halfmiles and Guthooks apps. For me, I would like a combination of
> the two. Thats not going to happen.
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