Do you still think that your business can do without a mobile application? Consider yourself a loser. The human brain has already united with the World Wide Web, and mobile applications have become intermediaries between them. If your business still does not have direct access to the customer's brain (through an application), you will soon lose this client. From the book you will learn about the basic principles and tools of a successful application. You will understand how to monetize a product and increase conversion. Get acquainted with the useful cases that Vadim Fainstein has accumulated over 15 years of successful work. Today, 200 million people use his company’s products; the total value of projects has exceeded a billion dollars. The book will be useful to business owners, entrepreneurs, marketers, investors and anyone who is thinking about or is already creating mobile applications.