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Best iPhone App for Skiing? - Page 2

post #31 of 56
Quote:

Originally Posted by skier219 View Post

 

FNJR3L93EKAT
 


This is the code I used. Thanks!

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post #32 of 56
Quote:
Originally Posted by skier219 View Post

It's been a while since I tossed out some promo codes for Theodolite Pro, so here are a few:

 

 

K7NRLTLJHYWX
FNJR3L93EKAT
XFAJYP797JMJ
477MHXY3A6N4
EHJAA96F7R66
 
(please make a note of which code you use as a courtesy to others)
 
Look for the "redeem" link in iTunes to use the codes.  On the iPhone, look under the "Featured" section of the App Store app then scroll to the bottom.
 
As far as speed calculations, there are a few options.  What Chris seems to be referring to is a speed based on the space/time difference between two ground-position readings, and he's correct that this only computes the horizontal component of speed.  It can be quite accurate when computing velocity over longer periods of time, but is not very good in dynamic scenarios.  GPS data doesn't have the response needed for dynamic events.
 
In cases where the device gives an accurate vertical position, the data could be used to come up with a proper 3D velocity.  The iPhone 4 gives significantly better vertical position readings than previous devices, but I have not done enough analysis of the data to see if it's really good enough for use.  Older devices definitely don't provide good enough vertical data for accurate elevation/altitude, and definitely not for velocity (the error band may be as much as the speed).
 
In dynamic situations, the accelerometer can be used for extremely accurate velocity computation (ie, see apps like gMeter).  But you have to make some very specific assumptions about initial conditions, as well as device orientation (to filter gravity out of acceleration readings), and this won't really be practical for pocket use while skiing.  The situation can be improved by blending gyro and accelerometer data in the iPhone 4, and I plan to test this on the slopes soon.  Additional blending with GPS data may give us a usable solution.
 
BTW, regarding battery life, there should not be issues if an app properly adjusts use of location services before going into the background under iOS 4.  This either means suspending services for apps that don't need it, or adopting Apple's "significant change" methods for location-based operations in the background.  I know some apps do not handle this properly, and it may cause the device to keep the GPS hardware running longer than it needs to be (you'll know it if the location services arrow in the top status bar doesn't turn off).  If that's the case, contact the app developer.


So do you purchase the app first and then do the redeem thing on the featured section?

post #33 of 56
Quote:
Originally Posted by esumsea View Post



Quote:
Originally Posted by skier219 View Post


So do you purchase the app first and then do the redeem thing on the featured section?


By redeeming the code you purchase the app so first click the redeem link on the right side of the iTunes Store.

 

This is a great app! Almost no latency issues!

post #34 of 56

This is a highly technical paper, but it explains it well. http://www.aprs.net/vm/gps_cs.htm

post #35 of 56

I used: K7NRLTLJHYWX

 

Thanks!

post #36 of 56

Any thoughts on droid aps?

post #37 of 56
Quote:
Originally Posted by SeanVA View Post



Quote:
Originally Posted by esumsea View Post



Quote:
Originally Posted by skier219 View Post


So do you purchase the app first and then do the redeem thing on the featured section?


By redeeming the code you purchase the app so first click the redeem link on the right side of the iTunes Store.

 

This is a great app! Almost no latency issues!


Yeah, all codes were already used.  Bummer

 

post #38 of 56

Just an update from Ripxx. We just released our Droid version of the app for anyone interested in that. We also have a new update currently in review with Apple that adds trail names, exporting of your data via email, and Facebook integration. It also fixes several bugs.

post #39 of 56

After discovering my new phone needed to thaw out to unlock it last Saturday.... I'm thinking the best app for me is the "leave the phone in the car or locker" app. 

post #40 of 56

Now that AT&T's growing web is finding it's way into the hinterlands, it looks like I can finally get an iPhone in the next month or so so I'm looking at apps and basic iPhone capabilities. The first apps I'm getting are Hunter Research's Theodolite, gMeter and the indispensable Wx, mobile plug-in. I've been looking forward to getting Theodolite for some time and can see tons of uses. What functions are usable outside of service areas? Everything, but geo-referencing images?

 

I'll review the aforementioned GPS apps, but need to get up to speed relative to limitations of the iPhone and GPS accuracy as well as other general uses like photos and video....and ruggedness. In remote areas without service, the GPS is worthless. Unless I'm missing something here. So I imagine that the focus for maps will be in areas relative to service for now, correct? But using it as a map reference in remote areas will be nice if there are good libraries to access. MacGPSPro has a bunch of libraries and scanned maps for purchase, of which I own many. Installing and using them as PDF or other image file references seems plausible, but I'm curious how one could best integrate them or better to focus on iPhone specific GPS Mapping apps? The MacGPSPro allows you to plan routes and waypoints and upload them into your GPS as well as download the GPS data, including speed.

 

I can't wait for the day where one compact, rugged and ligtweight device is a SAT phone, camera, video, GPS, browser and email communicator.......and makes good coffee. wink.gif

post #41 of 56

Here are five promo codes for Theodolite Basic.  It was just included in Apple's "Rewind 2010" feature showcasing the best apps of 2010, so I figured I would spread the love around.

 

 

REEY3EJRYYTF
A9XAJTJEYWM9
FK9XNXM37XLX
XA6NREHNAR4X
LW9XY4WYKXLX
 
Please make a note of which code you took as a courtesy to others.  To use a code, look for the "redeem" links in iTunes on the computer, or on a device, look in the App Store app under the "Featured" tab.
post #42 of 56

 



 

Quote:
Originally Posted by Alpinord View Post

I'll review the aforementioned GPS apps, but need to get up to speed relative to limitations of the iPhone and GPS accuracy as well as other general uses like photos and video....and ruggedness. In remote areas without service, the GPS is worthless. Unless I'm missing something here. 

 

 

 

Terry, give me a holler when you get an iPhone, and I will hook you up with a couple apps.  By the way, it's a foregone conclusion that there will be a Verizon iPhone in early 2011 (my bet is a January announcement with sales soon after).  So that may give you another option in your area.  AT&T is mediocre where I live and work, but it happens to be stellar in the local mountains where I ski (and at two of those places, Verizon is a full on zero signal).  It's also worked good for me at Alta and Snowbird where I spend most of my time when skiing out west.

 

As far as GPS, it's kind of interesting.  While you definitely need an internet connection to use maps, GPS itself  functions without network of cell coverage.  You really just need a clear line of sight to the sky, good enough to hit 3 satellites for position or 4 if you also want elevation/altitude.  The iPhone 4 has much better GPS hardware than previous devices, and gives better position and altitude accuracy with faster fixes.  It's good enough to peg my position and elevation at home within about 5-10 feet in both cases (the quoted error band is more conservative than the actual accuracy).

 

I have used the iPhone GPS out in the middle of nowhere without a network connection or nearby cell towers.  In this scenario, it takes a lot longer to acquire an initial fix -- "tens" of seconds rather than the usual 1-2 seconds when there is network.  The reason for this is that the iPhone uses assisted GPS (AGPS).  When there is network or cell coverage, it is able to use that additional data to quickly triangulate and correlate with GPS data for very quick refinement.  With GPS alone, the refinement takes a bit longer.  Some people give up thinking there is no location service capability, but if you give it 10-20 seconds, it will come through with a pure GPS fix that normally has very good accuracy.  Older iPhones took longer to get an initial fix in this scenario (maybe 20-40 seconds) and would have had poorer accuracy.

 

When you think about the capabilities we now have with what's essentially a handheld touchscreen computer with GPS, network, accelerometer, gyro, magnetometer, and camera, the possibilities are mind boggling.  I am just beginning to touch on them myself, and of course other developers are coming up with great ideas all the time.  It's an awesome time to be a software developer, engineer, and outdoor enthusiast.

post #43 of 56

Thanks Craig. On so many levels the GPS and other capabilities you mentioned are great news. Obviously, I had no idea satellite triangulation was part of the mix. Especially in canyons, forests and deep valleys, my GPS can take a while to get triangulated. Small price to pay for accuracy in the wilderness.

 

(As an aside, with the GPS capabilities, an app for golfers is AccelGolf.)

 

To date, Verizon doesn't get the coverage Alltel has, AFAIK. Since Alltel in rural areas got packaged and 'sold' to AT&T to make it all 'legal' and such rolleyes.gif, we will be absorbed. Thanks for the heads up on iPhone and Verizon. A reason to double check coverages if there has been any changes.

post #44 of 56

Hey,

 

Thanks a bunch skier219!  I used code REEY3EJRYYTF.  I'm really locking forward to checking out your app.  .

 

 

Z

post #45 of 56
Craig- just redeemed FK9XNXM37XLX. Look forward to playing with it. Too many toys, no time to ski.
post #46 of 56

I used

XA6NREHNAR4X
THanks,
I'll post a review.
Scott
post #47 of 56

I've begun using RunKeeper to track my vertical and distance skied via my iPhone 4 and like it so far.  Uploads to the RunKeeper website and shows your tracks on a map and with a vertical profile, speed, and pace graphs below the map.

 

I'm only using the free version, may upgrade to the paid version soon if I continue to like it.

 

Mike

 

P.S.  Also have Theodolite and like it a lot!

post #48 of 56

SkiMaps is sick, but you know being stuck in the US it's kinda pointless

post #49 of 56

Just a heads up. All those codes have been used already.

post #50 of 56

Was checking out JH Tapped, looks like a cool app.  Anyone have first-hand experience with it?

post #51 of 56

I used ...

 

A9XAJTJEYWM9

 

Thank you!

post #52 of 56
Quote:
Originally Posted by skier219 View Post

It's been a while since I tossed out some promo codes for Theodolite Pro, so here are a few:

 

 

K7NRLTLJHYWX
FNJR3L93EKAT
XFAJYP797JMJ
477MHXY3A6N4
EHJAA96F7R66
 

 All of those codes are dead.  Any chance of receiving one via PM?

 

Thanks,

 

Rich

post #53 of 56

     Quote:

Originally Posted by MikeC View Post

I've begun using RunKeeper to track my vertical and distance skied via my iPhone 4 and like it so far.  Uploads to the RunKeeper website and shows your tracks on a map and with a vertical profile, speed, and pace graphs below the map.

 

I'm only using the free version, may upgrade to the paid version soon if I continue to like it.

 

Mike

 

P.S.  Also have Theodolite and like it a lot!

 

RunKeeper Pro is free for most of January. Hop on it!
 

post #54 of 56


Already grabbed it but thanks for the heads up!

 

Mike

Quote:
Originally Posted by spknmike View Post

     Quote:

Originally Posted by MikeC View Post

I've begun using RunKeeper to track my vertical and distance skied via my iPhone 4 and like it so far.  Uploads to the RunKeeper website and shows your tracks on a map and with a vertical profile, speed, and pace graphs below the map.

 

I'm only using the free version, may upgrade to the paid version soon if I continue to like it.

 

Mike

 

P.S.  Also have Theodolite and like it a lot!

 

RunKeeper Pro is free for most of January. Hop on it!
 

post #55 of 56

MotionX for iPhone is pretty sweet.  Used it in the past.  Since I have a Android now, I use SportsTracker....mostly for biking, but it can do other stuff like skiing..also works with HxM bluetooth heartrate monitor, google maps, auto upload your tracks to the web and you can review them etc...but I digress, this is an iPhone thread I guess.

post #56 of 56

Techlogik, I agree MotionX GPS is a solid app.  I tried a few today on the slopes, here are my quick thoughts:

  • MotionX GPS Lite: best of what I've tried so far if you want to be able to view data on your iPhone up on the hill.  Nice mix of features, UI is easy to read and use with goggles on while riding up the lift or stopped on the hill, excellent export of data through simple email, Facebook or Twitter.  The lite version is free.  Check out the MotionX site for lots of info, helpful links and some video.  No MotionX specific PC, Mac or Web analysis; though there seems to be a lot of options that leverage the .gpx and .kmz files that can be exported.  One of my favorites so far is a free site called utrack ... here's a link to sample report, not skiing, but you'll get the idea.  Direct link to the Utrack report generator.
  • Runkeeper Pro: even set the the Alpine Skiing mode, this app seemed largely useless to me on the hill.  Zero thought seems to have gone into the UI for this app outside of for running.  Font size and screen layout are poorly done and again, optimized for data that a runner cares about.  No useful display of basic metrics (e.g. max speed, max elevation, vertical, etc).  There is information in some bar charts, but with the layout on the iPhone screen I could only really get a basic idea of rough ranges.  The export is to the Runkeeper.com site.  I do like the activity view on the Runkeeper site as it provides an interesting interactive view of the data with google map with GPS track overlay and a chart with vertical and speed data.  Moving the mouse pointer along either the vertical or the speed graph moves the GPS (blue dot in the image below) along the GPS track overlay on the Google map. Runkeeper Pro is free until the end of this month.  Since Runkeeper can export .gpx files, all of the same reporting and analysis tools that you can use with MotionX are available likely available for Runkeeper, although I have yet to do any detailed comparison.

 

Runkeeper.com activity page:

132703048's Activities | RunKeeper

 

 

I like the potential of the Runkeeper site for reporting and analysis, but it is so irritating oriented towards running that I'm still looking for the right option.  For example, even when the activity is set to alpine skiing Runkeeper only reports on vertical CLIMBED and shows nothing (that I've found so far anywhere) on vertical descended.  Puzzling and irritating.  There are many examples of the same kind of odd optimizations for running and blatant disregard for activities that Runkeeper claims to support.

 

Some observations that apply to both:

  • Battery life on my iPhone 4 was surprisingly good.  I was running one GPS app or another for 4+ hours and still had 1/3 of my battery left at the end of the day.  I was also listening to music and made a few phone calls while on the lift.
  • No issue whatsoever getting solid GPS signal everywhere on the mountain including in some narrow, steep, heavily wooded areas where I expected there may be some problems
  • Accuracy was good.  I tested speed across several ranges while driving up and down the canyon (15 to 25, 30 to 40 and 45 to 60) as well as varied speed widely to see how well the GPS calculated speed kept up.   

 

I'd gladly pay quite a bit for a combination iPhone app and web site optimized for alpine skiing.  For free solutions, both MotionX and Runkeeper are okay.  My conclusion so far:

  • MotionX GPS -- if your primary focus is easy access to basic data on the mountain
  • Runkeeper -- if your interested in looking at data at home

 

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