Reliable. Pencil app is a treasure learning software, which contains a lot of electronic materials, such as real questions and electronic textbooks, as well as excellent video tutorials. The software also provides the functions of learning and communication. You can see it when you slide down the homepage. You can post it yourself or reply. At the same time, there is also a university area for college students, which can make study plans for free, so the pencil app is more reliable. Pencil box is a tool for career planning, learning and growth. Committed to helping young people grow up from different angles and creating intelligent assistants for career exploration in high school, undergraduate and postgraduate stages.