Access a full version of PDF Reader Pro to enjoy the advanced features:

 1. Open the app and click Upgrade on the sidebar;

 2. Then a comparision table between free and paid version pops up,  click Upgrade below the table;

 3. Finish your payment and enjoy the advanced features of PDF Reader Pro;

 4. If you cannot run the full version after the purchase, please Restore your previous purchase inside the app.

Note: the price showed will differ because of the exchange rate in different regions.