The most striking thing about SurveySparrow is its design & superior UI. Love the way it interacts with the customers and keeps you engaged. SurveySparrow helped me collect feedback from my customers in a conversational manner and ended up getting me higher responses.
I've been using SurveySparrow for a year. In fact, the impressive chat-like survey interface made me switch from SurveyMonkey. And the completion rate is super-amazing! Loved it!