This app was mentioned in 4 comments, with an average of 2.00 upvotes
Should be Colorado Roads in the App Store. I have Android.
Edit
Found it. https://play.google.com/store/apps/details?id=com.cdot.mobile
Also helpful are the CDOT Colorado Roads apps.
https://play.google.com/store/apps/details?id=com.cdot.mobile&hl=en
https://itunes.apple.com/us/app/colorado-roads/id542826138?mt=8
Pretty much all videos show you how to chain in perfect conditions. Which does not always work out as we chain up in some nasty weather.
Pull your chains out make sure they're in the right direction.
fold in half as shown in the video.
place over outside tire, then fold the other half over the inside tire.
Videos tell and show everyone to spread the chains out and run over them. This does not always work in bad weather.
Do not do #4 unless you want to try it.
reach behind the back tires and connect the chains, then connect the chains in the front
get in truck and roll over the chains.
now connect the middle set of chains, and disconnect and reconnect the inside and outside chains. so you can lock them tight.
put bungies on if you want.
it also doesn't hurt to remove the mudflaps if they come off easily.
C DoT app In the menu check "Trucker Info" and it will give you current chain law and road shut down info.
WY DoT shows the roads in Wyoming and gives road shut down info. WY no longer does chain law, they just shut the roads down. I personally think they should at least include the chain law in road shut downs due to snow/ice.
WY Roads Have not used this app yet as it's new.