3.2. Supported forms

PDF Expert for iPad supports filling out AcroForms created in Adobe Acrobat or other similar apps and Static XFA forms created in Adobe LiveCycle.

Note: Dynamic LifeCycle (XFA) forms are not supported by the application.

Check this link to check the JavaScript (Adobe Acrobat) forms for PDF forms and click here to look through Scripting in XFA (LiveCycle Designer forms) which will work in PDF Expert.