All you need to do is access the APP PERMISSIONS setting or equivalent on your mobile device. You can then turn off any permissions you are not comfortable with. The thing to remember with some of these permissions is the privacy policy. That will tell you how they use that info they want access to. A lot of app request your contacts because of messaging options. As far as tapatalk don't know why they need it and on my device its turned off
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That sounds like a sensible thing to do for more or less all the apps ...