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"Code and Create The Perfect System!"

January 31-February 1



Andrej Griniuk, Christopher Michaelides, John Lyons, Tom Frauenfelder

The largest contributing factor to cyclist safety is visibility. NIGHTRIDER is a cycling jacket combined with wearable electronics to produce an intuitive experience where a cyclist's intention to turn and slow down is better communicated to drivers.

The NIGHTRIDER app also supports route navigation (safer route vs faster route) which is communicated to the driver through peripheral light guidance on the rider's wrists.

The NIGHTRIDER app itself also facilitates PayPal payment for the purchase of the jacket itself, navigation expansion pack, and payment of ad-hoc repair services; the social element in joining "Bike Pools" to find out the location of cycling groups riding home together; and the activation of hazard lighting - so that riders are highly visible when attending to tire tube changes.

+ View the App

2nd place

Response Fund

Bradley Clayton, Chris van Raay, Hadi Michael, Kelly Jennings

Fund early. Respond immediately. Your pledge helps us detect natural disasters early and fund the response immediately.

Connected smoke detectors are placed outdoors, in bushfire prone areas. Your pledge is recorded in our system for disaster days.

When a fire is detected, the people closest to the scene are notified. Using the app, they validate the fire, provide photos and any other information.

Once the emergency response teams declare an emergency, your pledge is withdrawn and the funds are released for the effort. This means real money, in real time.

+ View the App

3rd place


Sam Burnett, Thanura Siribaddana

Chority is a web app for the parents of Australia to help teach their children the value of giving, while encouraging them to do their daily chores

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Melbourne Judges_



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Finals lockup glowing

November 14-15

PayPal Town Hall
2161 N. First Street
San Jose, CA 95131

A true global competition where the City Champions face off, compete, conquer and claim $100,000 USD and the title of The Ultimate Hackers For Good.

Can't make it?
Join the livestream!


  • How do I register?

    Select your city of choice from the list. Registration is open 24/7. May the best hack team win!

  • Can I bring a team?

    Yes, you can bring your friends or team up with other hackers on site. You can hack solo, or in a team of a maximum of 4 members. No matter what you choose, be ready to battle!

  • What kind of code can I write?

    All breeds of code welcome.

  • Do I need to integrate PayPal, Braintree or Venmo into my hack?

    Yes, PayPal, Braintree or Venmo must be the sole payment method included in your hack in order to be eligible for the BattleHack competition.

  • How to win $100,000 USD

    Win a City BattleHack. Get flown, fed and cared for at our World Finals. Beat all other City Champions with code that impresses everyone on the planet. Be crowned the Ultimate Hackers For Good.

  • How is the hack structured?

    BattleHacks are full of 24+ hours of awesome stuff. In general, on Day 1 registration opens, you arrive, scope and share skills, create teams, meet judges, and then our gong hits and hacking begins. Add gourmet food, food and more food. Hack through the night, or grab a nap, beer break, and maybe even a massage or two. On Day 2, we have rehearsals, more food, and hack till you hear our gong, signaling the end of hacking! Teams present their apps, judging occurs and prizes are awarded.
    Check your BattleHack City’s registration page for specific timeline details.

  • What can we win?

    Glory! Fame! And oh yeah, you get some other good stuff! First place winners get our epic axe, flight and hotel accommodations to the World Finals in Silicon Valley, and a chance to $100K USD, no strings attached. Fear not, there's a slew of other goodies, and of course local partner prizes, and all our BattleHack swag!

  • Do you own my hack?

    No, this puppy is yours, born and bred from BattleHack love. BattleHack is for you to have some fun, do some good -- and have a chance to win $100K USD.

  • Should I bring my pyjamas?

    Expect to stay overnight, so bring whatever you need to get you through a 24-hour hackfest. We’ll provide some sleep spaces for those who need to crash or when energy drinks start to ebb. Remember you are in a public forum, so do cover up.