중3 수학 is an Android app designed to help students study math. This app is specifically targeted towards junior high school students in their third year, and it aims to provide a comprehensive overview of the math curriculum. The app has been developed by needto and is available for free.

The app contains a collection of explanations and summaries of various math topics that students will encounter in their studies. Although the app may have some shortcomings, it is a useful resource for students who want to review concepts they have learned in class. The developer has requested that any typos or mistakes be reported through the feedback system, and they will be corrected in future updates. Although the app may not have been developed by an expert, it is still a helpful tool for students who are studying math at this level.