Free vertical abacus PRO is an Android app developed by Rarepeak juegos y entrenamiento mental. It falls under the category of Education & Reference and is a free app available for download.

This app offers a virtual abacus that helps users learn and practice addition, subtraction, and the concept of place value. With its vertical design, it allows users to easily understand and assimilate the concepts of units, tens, hundreds, thousands, and even tens of thousands.

One of the standout features of Free vertical abacus PRO is its automatic takes when accumulating 10 pieces in a rod. This feature mimics the real-life experience of using a physical abacus, making it a great tool for hands-on learning. Additionally, the app can be used offline, as it does not require a data connection.

To ensure accuracy, the app provides a button to check the result of calculations. This feature allows users to verify their answers and track their progress.

Overall, Free vertical abacus PRO is a fun and educational app that provides an interactive way for users to learn and reinforce math concepts. Whether you're a student looking to improve your math skills or a parent wanting to support your child's learning, this app is worth a try.