In what stage of the product life cycle is the Reading Rainbow television program? Has the mobile app changed that? Explain.

You may have grown up watching LeVar Burton on PBS's Reading Rainbow show. He hosted the children's educational show for 26 years and now has taken it mobile. Burton purchased the rights to the show and launched a Reading Rainbow mobile app, making it the App Store's top-grossing app in less than a year. The app is free to try, but a $9.99 per month or $29.99 per six-month subscription allows kids unlimited access to the library and adventures on themed islands such as the Animal Kingdom and others from the iconic television show, as well as new adventure field trips. Kids have gobbled up more than 10 million books. Audio and video storytelling brings books to life for children, and interactive elements encourage curiosity and learning. Adventures incorporate segments from the TV show and brand new video. Up to five children in a household can customize their own reading adventures, and reading lists are suggested based on their abilities and interests. The parent dashboard lets parents monitor their child's reading progress. LeVar Burton personally starts each day with a "Good morning, y'all" tweet followed by 15 to 20 more tweets each day to his followers. The service is always expanding, offering new adventures that are often based on user feedback through social media.