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Your LimeSurvey version: 5.6.14
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Survey theme/template: fruity
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Dear Forum,
I tried to set up the a survey with multiple choice answers. Each question has its own question group and a timer of 45 seconds. If the timer is running down, the next question group is shown to the user. The survey was supposed to be run on two Ipdas, and to offer a nice user experience the survey has been marked as web app capabel by adding the following lines to the layout_global.twig:
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no, minimal-ui">
    <meta name="apple-mobile-web-app-capable" content="yes">
    <meta name="apple-mobile-web-app-status-bar-style" content="black">
    <meta name="apple-mobile-web-app-title" content="NameOfSurvey"/>
    <meta name="mobile-web-app-capable" content="yes">
The link to the survey has been used to save the survey to the home screen of the two devices. 
This set-up worked for the first survey respondent, however the second respondet's timers were set to the time remaining from the first respondent.
I tried to solve this issue by manually deleting all Safari cookies, but this failed to solve that issue.
What is going one here, and how can I avoid timer state being shared for multiple users, doing the survey in the same browser on the same device?
Sorry for the lengthy description, but i don't know which of these factors might be relevant to solve the problem so I decided that more information is always better. 
Best regards
Simon

Add the newtest=Y parameter to the survey URL.

Thank you, this indeed seems to solve the problem.

However, could you elaborate on the exact nature of the underlying problem, and is there a different option to avoid it? Having to manually add a url parameter seems to be rather cumbersome. Can I set a parameter somewhere that makes this behaviour the default?

This resets the session. There is no global setting to change the behaviour.

Would there maybe be a way to do this using java script when loading the first page of the survey?

No, the session is already set when the first survey page loads.

I don't understand the problem with appending the parameter to the URL.