Amazon FreeTime Unlimited—the all-you-can-eat subscription service geared to children and families—has expanded its offerings for kids ages 9–12. FreeTime Unlimited previously offered titles for ages 3–8. The thousands of additional videos, educational apps, games, and books for the 9–12 set  include a selection featuring Sonic the Hedgehog, Monument Valley, iCarly, and Star Trek, according to an April 26 release. The service has also introduced FreeTime Smart Filters, a feature that recommends “age appropriate” content, from videos and books to learning apps and games, and enables parental control in managing FreeTime content. The FreeTime Unlimited service is available exclusively on Fire tablets, including Fire Kids Edition, as well as on Kindle ereaders. Subscriptions start at $2.99 per month for Prime members and $4.99 per month for customers who are not yet Prime members, according to Amazon.