Curso ISB is an iPhone application developed by Telsur Inc. It offers a platform for taking online English classes with teachers. Users can access interactive lessons, exercises, and live sessions to enhance their English language skills. The app provides a convenient way to learn English from anywhere with personalized guidance from experienced instructors.

With Curso ISB, students can engage in real-time conversations, receive feedback on their progress, and practice their language skills through various activities. The app aims to make learning English accessible and effective through a user-friendly interface and structured curriculum. Whether you are a beginner or looking to improve your fluency, Curso ISB offers a comprehensive learning experience tailored to individual needs.