ATNSOFT Calculator Pro is an Android application that allows users to perform mathematical operations with ease. The app has an ergonomic on-screen keyboard and voice input feature that supports up to 26 languages. Users can enter numbers and mathematical expressions by speaking into their device, and the app will calculate the result immediately.

The app also offers the ability to make two or more calculations simultaneously, copy the result to the clipboard, and record all calculations in the history. Users can execute mathematical operations with incredibly large numbers and expressions, raise to the n-th power, extract the root of the n-th power, and perform percentage calculations. Additionally, the app has convenient, user-friendly settings that can be opened by swiping from the left edge of the screen or using a menu button.

The pro version of ATNSOFT Calculator is available for free in exchange for an interesting article, blog post, YouTube video, or quality translation of the application texts into another language. Please visit the developer's website to learn more about this offer.