Multiple PDF Merger

 Best app to merge and split PDF files. 
It has the following advantages:
•  Works offline;
• No ads, commercials or full-screen banners;
• Possibility to select multiple PDF files for merging or splitting;
• Uses latest Google libraries for parsing PDF documents and building a secure application;
•  The selected files can be removed or relocated using menu options or drag and drop principles;
To remove the selected file: long press and swipe left or right, for PDF relocation swipe up or down;
Merging PDF files may take some time to finish, make sure you have all the background apps closed.
There are two ways to directly select PDF files: a custom popup file picker and a native one, to select which one to use check settings view.
 Note: If you have a weak device don't select too many files, the app may crash because of low RAM memory;
Application doesn't support password protected or broken PDF files