Yes, you can use your own custom web form. This will require integrating your system into the mobileStorm platform using our Data In API. You can request an API by sending an email to support@mobilestorm.com. There is a one-time $400 cost associated with utilizing any of our APIs
You will have to read up on our API documentation:
http://www.mobilestorm.com/go/why-pro/features/digital-marketing-apis/