Good offline survey tool
We've been using QuickTap Survey to administer short surveys at events. It provides a good offline survey solution that we've found to be very stable and easy to use.
Good customer support, easy to use
The available survey logic is fairly basic, but will hopefully expand as the product develops
Good offline capabilities
SurveyGizmo doesn't have very good offline capability
Offline surveys at events
Makes it easy to capture data at events, which is a core part of our event evaluation service
QuickTap Survey is a good solution if you want to run offline surveys on an iPad.
Less than 6 months