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Article History

Accepted: 18 November 2021

First Online: 10 February 2022

Declarations

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: The study protocol and the procedures were approved by the local ethics committee (Reference Number 20.6.5) and are in accordance with the ethical standards of the 1964 Helsinki Declaration and its later amendments. Caregivers are, for example, free to stop using the APP at any time without giving reasons for justification. All caregivers who intend to use the APP provide informed consent. No incentive other than the free use of the APP is provided to the children and their caregivers by the Research Unit Developmental Psychology at the Department of Psychology and the Jacobs Center for Productive Youth Development of the University of Zurich (HOST). When registering for the APP, a user explicitly agrees to the data processing as set out in the Terms of Use for the APP and the Privacy Policy by the University of Zurich. The HOST will continuously refine the APP. At some instances, this will lead to changes in the data processing by the HOST. Users will be notified of such changes in an appropriate manner (e.g., at the next login).

: The authors declare that there were no conflicts of interest with respect to the authorship or the publication of this article.

: The items of all the scales and information about data protection are available on . The data sets generated during and/or analyzed during the current study are not publicly available due to the current data protection guidelines, see section  but are available from the corresponding author on reasonable request.