With the Rapid Learn app, you can browse many courses that contain chapters, content, and may contain a quiz to test your course skills and your level. There are many categories such as programming languages, design, school materials, and quick lessons to explain how to install programs or create a specific task, in addition to a section for daily training on several topics such as programming issues and others. You can subscribe with me in this application and include your book or article completely and in detail in the form of texts and pictures only. The cost of one article is $ 10, paid once, either to amend the material by agreement in a dynamic way. You can also buy a free copy in a store with a username and password for your school or academy for private lessons individually, and provide you with hosting to raise the control panel, subscribe for one year, renewed in agreement with special colors and your own logo, the application, and also the ability to activate Google ads on the application. The cost of this service is $ 300, one-time payment, except for the annual subscription renewed by agreement for the web hosting. Note: An iPhone version is also available, but an additional service costs an Apple account subscription $ 100 annually to be paid.