EXA is an iPhone application developed by IBK System Co.Ltd. It falls under the category of Education & Reference and is available for free.

EXA aims to support personal growth and development throughout all stages of life. By installing EXA, users can gain a sense of stability by knowing that they are continuously growing. In a world where information comes and goes at a rapid pace, minimizing the cost of searching for knowledge and information is crucial. EXA serves as a personalized growth information provider for its users.

Anyone can read book reviews on the platform, and as users' membership level increases, they can also upload their own reviews. Through the notification feature, users can receive feedback from readers on their book reviews. Additionally, by subscribing to specific book reviewers, users can receive notifications about new book reviews. Users can also check their own growth level through the personal growth ranking feature.

EXA is dedicated to supporting the personal growth of its users.