Font Viewer is a personalization app for Android devices developed by Oleg A. As the name suggests, it allows users to view detailed information about TrueType Font (TTF) and OpenType Font (OTF) files. The app is free to use and is designed to be a simple tool for those who want to view fonts without any additional features.

With Font Viewer, users can easily view information like the font family, style, file size, and date created. The app has a user-friendly interface that makes it easy to navigate, and it is lightweight, so it won't take up much space on your device.

Overall, Font Viewer is a useful tool for anyone who needs to view font files on their Android device. While it doesn't have any advanced features or editing capabilities, it serves its purpose well and is a great addition to any designer or developer's toolkit.