Good day Tage, thanks for your question. I am glad to be able to provide assistance to you today. If this particular app is from the Microsoft Store then it is safe to download it and any other app/s like this will be safe as long as you download it from a reliable download source and also on how and where you will be using it and I would also suggest to look at other options below as an alternative as well.
https://www.clickspeedtest.info/auto-clicker
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Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.
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Regards,
Paul R.