they access app encyclopaedia and get live help from a teacher. >> it's popular in urban areas, it's had the biggest take up in rural areas, where children have limited access to schools, books and other educational tools. >> the team behind the service is constantly looking for ways to make it better. the cofounder is 25-year-old. he says he is overwhelmed by the company's success in a few years. >> studying can get boring as most people know. to hear that they are kids hiding under their blanket and studying all night or seeing that students were studying is cool. the students attend school. it's thanks to an n.g.o. that they have access to mobile phones. >> i feel that especially in science subjects that there is a personnel increasing. personally it's improved the grades of the statement. >> education analysts say there's potential in innovations like this. >> if they are structured and proper training is provided there would be a real benefit to reap from the use of mobile phones. >> he and his team plan to reach millions of students across africa. such innovations are racing ah