A full version app for Android, by SpDigitalAppsZone.

JHS ICT Book is a textbook that has been developed for both students and teachers. It contains basic information on ICT. It also covers the full spectrum of ICT topics, including computer technology, software, networking, internetworking, data transmission, and many more. The app also contains topics on integrated circuits, digital logic, and the integration of technology into society. It is very easy to use, and the interface is also very user-friendly.

You can download and install this app for free, which means you do not have to pay a single penny.