I have removed tapatalk because a vulnerabilty has been reported in it. Once it is fixed I will evaluate whether to re-install it. More info: http://www.securelist.com/en/advisories/58348
This post appears to state that the vulnerability was fixed before it was reported: https://support.tapatalk.com/threads/tapatalk-cross-site-scripting-vulnerability.24719/#post-131407 I could be wrong but I don't actually recall being notified of an update around that time.
I have removed Admin Talk from my TT app. I can access AT on my browser anyway. Just add pushover, so we get alerts on our mobile.
Tapatalk offered an easier way IMO of moderating and "likeing" post for the staff and users. I had also seen some decent traffic on the TT analytic screen, but it may have been the minority of mobile users. I like it and had for years.