What makes all of this even more useful is that you can connect the app and your account to several other popular services. (pocket-lint.com)
However, one of those changes involved the way that outside apps can log in using Facebook — temporarily breaking the login process for popular dating app Tinder, as well as a handful of other popular services. (businessinsider.my)
Here's a handy chart that compares some of the key features and offerings of OPP and two other popular services like it. (theabundantartist.com)