Geocortex Mobile comes with bundled with Geocortex Workflow. Geocortex Workflow includes a large suite of form elements to help you create custom forms to solve your business case. However, if Geocortex Workflow is missing a form element you need, you can implement a custom form element with the Geocortex Workflow SDK.
The Geocortex Mobile SDK Samples project has a variety of workflow samples:
Geocortex Workflow SDK
Learn more about the Geocortex Workflow SDK
Implement a Custom Form Element
Learn how to build a custom workflow form element