Amazon launches kids' content subscription service has introduced Kindle FreeTime Unlimited, a subscription service for children aged 3-8 years, which brings together children's content including books, apps, games, films and television programmes.

It is a paid-for extension to Kindle FreeTime, a free feature on the Kindle Fire devices, which offers parents the opportunity to manage what their child is looking at on the device. 

The service is priced $4.99 for one child, per month, or $9.99 for a whole family, or $2.99 and $6.99 for Kindle Prime members. It is available across the Kindle Fire, Kindle Fire HD and Kindle Fire HD 8.9'' devices.

Amazon Kindle vice president Peter Larsen said: "As a parent it's hard to predict what my daughter is going to enjoy, or which movie she's going to watch 50 times in a row-so I buy a range of content and hope for the best-but I get it wrong frequently. FreeTime Unlimited gives kids the freedom to explore age-appropriate content on their own and pick for themselves what they want to watch, play or read next."

When a parent signs up for the service, thousands of content titles automatically appear in the FreeTime section, sorted by their childrens' age and gender, and children are then able to explore the different pieces of content while obeying the controls their parents have set.