Cerita Anak: Danau Toba dan Asal Usulnya is an interactive storybook for children that tells the popular folklore from Sumatera Utara. The story is about a farmer named Toba who caught a golden fish that turned into a beautiful woman. Toba then married the woman with one condition. However, one day, Toba forgot his promise, and a great disaster occurred. The app is designed specifically for Indonesian children and offers two reading modes: automatic narration and read by yourself. The storybook also features animations and interactions that make the story come alive, along with sound effects and music. Additionally, the app includes educational games such as Sticker Danau Toba, Tebak Kata, Puzzle Jigsaw, and Tangkap Ikan, which are fun and educational. Overall, Cerita Anak: Danau Toba dan Asal Usulnya is a great way for children to learn about Indonesian folklore and improve their reading and problem-solving skills.