どこでもワーク　数学３年計算編 is an educational application developed by 株式会社　文理. It is a comprehensive workbook that perfectly aligns with school textbooks.

This app is designed for Android devices and is available for free. It falls under the Education & Reference category.

The app offers a wide range of math problems, with over 100 questions, focusing on calculation practice and providing useful problems for regular tests. It also allows users to keep track of their calculations by adopting a calculator-like interface, making it easy to identify mistakes.

One of the highlights of this app is the ability to earn items by correctly answering all the questions in a unit. Users can collect these items and decorate their "Curio Room" to make it stylish. The app also provides various user-friendly features, such as the "Retry" function to redo incorrect questions and the ability to view related formulas. Users can customize their learning experience and find a study style that suits them.

Please note that items can only be obtained by correctly answering all the questions in a selected unit, either in sequential or random order. Various settings can be accessed through the gear icon in the top right corner of the screen, including sound effects, timer settings, instructions on how to use the calculator, and the option to reset the learning history.

Overall, どこでもワーク　数学３年計算編 is a user-friendly educational app that offers a wide range of math problems and encourages continuous learning in an engaging way.