The paid version of the calculator Smart4U without ads and announcements and more features with three additional sections. Simple and easy to use calculator, which consists of six sections: - Standard mode; - Common Fractions; - Converter; - Functions and Graphs; - Date calculation; - Constants library. Standard mode provides a complete set of all the functions necessary for all kinds of calculations. Fractions mode lets you perform actions with simple fractions where necessary and to achieve higher accuracy. The calculator provides the ability to move along the chain of calculations back and forth and continue to calculating from any point. Stored history items give the opportunity at any time go back and see the step by step progress of calculations. And memory allows the use stored result in the required time. Unit Converter is a handy tool to convert from one unit to another. The "Functions and Graphs" section is intended for working with functions and analyzing results for different values of arguments and also comparing the results of various functions using a table. This mode also allows you to see and evaluate the graphical display of the compared functions. Date calculation - is a handy tool that will help you if you need to accurately calculate the date of a past or future event or find out the number of days between two dates. Constants library - all the constants on hand in a convenient directory with the search engine. In the future, this version of the application will have additional sections.

Description last update: 1. Implementation of the support for multiple languages. The app was available in English, French, German, Spanish, Russian, Ukrainian and Chinese (Traditional and Simplified). It is also possible to force (regardless of the language of the system interface) to set English, Ukrainian or Russian language as the program interface language. 2. Added the sound settings. Installation of three different key sounds. 3. Modified and improved application interface. 4. More detailed description on the page of the application in the store. 5. Implemented keyboard input, a detailed description of the involved keys and key combinations can be found in the settings app tab - Help. 6. The possibility of using themes with high contrast is realized. 7. Added a section for working with functions and graphs. 8. Added a section for calculating the date. 9. Added section "Constants Library". 10. Improved performance and bug fixes.