This app was mentioned in 5 comments, with an average of 1.80 upvotes
Bernie was the first "app" candidate.
https://play.google.com/store/apps/details?id=com.berniesanders.fieldthebern&hl=en
Bernie couldn't have gotten this much support if they had to use PCs to slow them down that much.
PS: look at all the apps on the right column!
PPS: Hillary doesn't HAVE an official app? I couldn't find it.
Now available on android!
https://play.google.com/store/apps/details?id=com.berniesanders.fieldthebern
Here you go http://www.meetup.com/San-Diego-For-Bernie-Sanders-2016
get on their mailing http://www.sandiegoforberniesanders2016.com/#!contact/c24vq
This should have events here use your zip code. Though I don't know where your at specifically http://map.berniesanders.com/#zipcode=92093&distance=50&sort=time&f%5B%5D=campaign-office&f%5B%5D=bernie-event&f%5B%5D=official-event&f%5B%5D=phonebank&f%5B%5D=gotv&f%5B%5D=canvassing&f%5B%5D=ballot-access&f...
or host your own!! But the meetup.org is the main place.
DOWNLOAD THIS APP https://play.google.com/store/apps/details?id=com.berniesanders.fieldthebern&hl=en
Since your state (I'm assuming you are a resident of New Jersey and a citizen) is a closed primary, I'm definitely sure you can't register the day of. You need to contact your Elections office and find out how to make the switch as early as possible. The deadline is in May. Tell all your friends, family, strangers, co-workers, and acquaintances too. In fact (and this mistake I afraid might have been made in Southern Florida), you can canvas for Bernie with an app and try to get as many people registered to vote as possible. The earlier you do this the better.
The app I linked on this thread is the android version. There is definitely an iOS version as well.
A major attribute of state laws everywhere is that election rules and laws are very fucking backwards. With the exception of California which automatically registers their voters (but their party affiliations might be completely wrong which is another trap in of itself.), all other state election laws suck. And even with California, election day is the type of day where some even propose that it should be a national holiday so everyone can go out and vote without worrying about their boss giving them the axe.