WPS Office

WPS is a free Office Suite application with all-in-one features. It is fully compatible with Microsoft Word, Excel, Powerpoint, and integrates PDF, presentations, spreadsheets, memo, Google docs.

Other features:

• The app comes with a clean and friendly interface where you can create presentations, Excel sheets, PDF or documents.
• Free PDF converter.
• File sharing abilities.
• App supports multi window mode.
• supports document encryption and keep your office documents and data safe.
• Supports wireless printing

Cons:

• it comes with an ads and you can't buy your way out.

Other than this it is perfect.