Big Font - Change Font Size is a free Android app designed to help users increase the font size on their mobile devices. The app is produced by UnitedAppStudio and falls under the Utilities & Tools category. The app is compatible with Android 9.0 and offers a simple and easy-to-use interface.

One of the main features of Big Font is the ability to preview the scaled text before applying it. This feature allows users to see how the text will look before making any changes. Additionally, the app allows users to increase the font size from 50% to 300%, making it easy for those with visual impairments to read text more clearly and easily. The app also has a feature to reset the default font size (100%) in just one touch.

Overall, Big Font - Change Font Size is a useful app for those who struggle to read text on their mobile devices. It is easy to use and offers a range of font size options to suit individual needs. The fact that it is free makes it an even more attractive option for users who are looking for a simple and effective solution to their font size issues.