A free program for Android, by keytools inc.

Split PDF, Remove PDF Pages is an extremely useful utility app that will help you to split PDF files into multiple pages with one click. This app can also be used for the same purpose but on a more manual level.

This utility is designed to work on Android OS, and its functions can be used on tablets and mobile phones. 

The app supports many file formats and can work with documents from different sources.

You can choose the output format of the document to be split according to your requirements and then save it in a new folder.