A free app for Android, by Boxwish.

The XLS File Viewer – ExcelViewer is a free application that helps you view your Excel files in an easy and quick way. This application can be used on your mobile phone or tablet, so you don’t need to install it on your PC. The app supports all the Excel formats that are currently available on the market.

You can use it on any device that is capable of running Android apps, even on tablets and some mobile devices. This is a very simple and easy-to-use application, so you can download it in a few minutes and start using it right away.