By default, TT uses StopForumSpam as a check on spammer registration via the app. So, let's say a spammer who isn't blacklisted by SFS does get through via TT. That is fine, the Human Spam moderation part of the Spaminator takes care of its spammy posts, if any.
IF the site has TT set to where the TT user must use the vBulletin registration form, same thing. If he is a human he will have no problems getting registered. Spaminator is designed to go totally unnoticed.
Because XRumer and other automated registration/posting systems allow IP and user agent spoofing, I am yet to see a actual spammer using a actual real mobile device, to spam. But, he's covered if he does - whether he gets registered via TT or by the native vB register form.
Okay. So there are currently no automated spamming apps (like XRumer) designed to register and commence spamming through mobile device plugins like tapatalk... And even if someone develops one, any attempted submission of a spam post after successful registration by such a bot would be acted upon by Spaminator forthwith. And any human, whether they have registered via vB or TT, would be similarly acted upon by Spaminator immediately upon an attempt at spam submission. So Spaminator apparently doesn't intervene on real humans (somehow it knows... via timing or whatever) at the member sign-up stage, but will in fact block attempted automatic registrations in addition to precluding any ability to submit spam posts. At least that's the way it sounds.
And yes, I've read that for a while now tapatalk has indeed been auto-checking email addys and IPs against the SFS database before granting registration. But if a spammer occasionally happens to acquire an unlogged IP and email address, and if said spammer happens to be a human who initially registers via TT's in-app system (perhaps uncommon but it could happen), that human spammer would obviously escape all of the vB sign-up screening measures. But never fear... Spaminator would still terminate that human's efforts to post any spam messages and presumably block them from any subsequent forum activities. I hope I'm understanding this correctly.