PowerPDF has three different versions. PowerPDF Free provides the most basic function with Ads. PowerPDF Pro for iPhone has all features and runs on iPhones only. PowerPDF Pro for Universal has all features and runs on both iPhones and iPads.

You can pick the version according to your needs.

The features of each version are listed below:

Features PowerPDF Free PowerPDF Pro for iPhone PowerPDF Pro for Universal
PDF Conversion
Scan to PDF
PDF file Viewing, Bookmark
PDF file Annotation, Text Extraction
PDF file Combine, Split
PDF Page Deletion
Runs on iPhone
Runs on iPad
PDF Password Protection
PDF Page Re-arrange
Dropbox Access
Box Access
Google Drive Access
Removed Ads
Price Free $4.99 $5.99