ฉนรกในหลวง is an educational app developed by Plan For Kids. It is available on the Android platform and is completely free to use. Categorized under Education & Reference, this app utilizes Augmented Reality (AR) technology to bring 3D graphics to life and enhance the learning experience.

The app is designed to be used in conjunction with the "ฉันรักในหลวง AR Book," which can be purchased online or at leading bookstores. By simply opening the app and pointing the camera towards the pages of the book, users can witness captivating 3D graphics and read the profound words of the royal anthem.

It is recommended to use the app in a well-lit environment or with the flash turned on (if supported by the device). In case the image is not clear, there is an option to adjust the auto-focus by tapping the magnifying glass icon. It is important to ensure that both pages of the book are flat and aligned for optimal detection. The app allows users to rotate the book up to 180 degrees from the front side, but the back side cannot be viewed.

Overall, ฉนรกในหลวง is an innovative educational app that combines technology and learning to create an immersive experience for children. It offers a unique way to explore the royal duties and compassion of His Majesty the King through Augmented Reality.