A milestone for mobile technology in the federal government. The General Services Admiinstration says its mobile apps site now hosts 100 different citizen-facing applications from across the government. That’s compared to two years ago, when apps.usa.gov held a catalog of just 15 apps. The 100th addition is a smoking cessation app from the National Cancer Institute. It helps smokers track cravings, moods, progress toward milestones and smoking triggers.