Podcasts, Target, Bubble Shooter and more on this week’s top free mobile apps charts

YouTube remains the No. 1 app on the top free iPhone apps chart this week, but the app has a lot of new company in the top 25. With the release of iOS 6 last week, Apple developed apps including Podcasts, Find my Friends, iTunes U, Find My iPhone and iBooks all saw new updates, propelling all the apps into the top 10. Apps using Apple’s new Passbook feature from iOS 6 were also vaulted into the top 25 like Target, Fandango and American Airlines.