Simple Stop Watch question will give you the option to start and stop the timer.
Go to: Login >> Select Survey >> Edit Tab >> Workspace >> Add Question >> Advanced >> Mobile >> Stop Watch
This is how it will look on the QuestionPro or SurveyPocket Offline App:-
When you add questions to a survey, by default, required option is turned off. When required option is not enabled, respondents can continue with the survey without selecting answers. If respondents go through all the pages in the survey without selecting answers, the response is still considered as complete. You can enable required option to make a question required so that respondents can continue with the survey only after responding to the questions.
This feature is available with the following licenses :