AngelList

The easiest and most private way to share things with your significant other (YC W12)

High quality, original, interactive how-to books for iPads. A better way to learn.

Never wait on hold again.

User Acquisition Platform for Mobile Apps

Provide the optimal user experience for music education using today’s emerging technology

Social Scrapbooking

Makers of Tap Tap Revenge, 50M iPhone users, acquired by Disney in 2010

Houzz for Travel - place to start for travel on ipad

"Hot or Not for Apps" for better app discovery

Social and privacy capabilities that reimagine the phone

Direct-deals mobile advertising marketplace

Mobile learning games for kids & parents.

Xbox Kinect for iPhone: bringing motion control console game experiences to mobile

Mobile Targeting & Engagement Platform w/ 40M downloads

The largest Do It Yourself app creation platform for non developers

Pinterest for activities

HIPAA-Compliant Group Communication Platform, YC W2012, StartX F2011

Mobile photo albums done right! YC W12

App Store for HTML5 Mobile Apps.

Reinventing maps for mobile

Secure mobile computing for enterprise.

Create and connect with groups in real-time

Adobe Creative Suite for Kids

Educational toy powered by iPhone

Physicians + iPad + EHR