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.