Follow these just 5 simple steps to change an application title in Oracle Apex (Oracle Application Express).
1. In your application builder of Oracle Apex, click on the Edit Application Properties as shown below:
2. Then click on User Interface Tab as shown below:
3. After that click on Logo Tab, then change the application name in the Logo field, here you can specify an image also for the application title and then click on the Apply Changes button to save the changes.