A free app for Android, by Utility apps by ABDev.

Do you need to view and edit Microsoft Excel files? If yes, then this is the app for you. XLSX Viewer: XLSX File Reader & Document Manager is an efficient, fast and user-friendly app to view, edit, and convert your Excel documents to XLS files.

XLSX Viewer: XLSX File Reader & Document Manager can also be used as an Excel editor, in which you can add, edit, and delete columns and rows, and also modify the cell alignment and formatting. Moreover, you can also calculate and perform complex mathematical formulas in your spreadsheets.

What’s more, the app is equipped with a user-friendly and intuitive interface that is extremely easy to use.