This would be the first advance.
My second request would be to be able to analyse drop outs by question by device. This would allow us to see how far through the survey the respondents... more »
Have some configuration for survey received time stamp so, that we update survey received date in salesforce.
Suggestion : In configuration option there is a option to map the time stamp of received survey date that we can map with salesforce field. So, that we have same survey received date updated in salesforce for reporting purpose.