Been mulling this over for a while and this seemed like the right community to ask. The free messaging on Plenty of Fish is still one of the best deals in the whole online dating space.
Military dating apps have strong verification processes which leads to a cleaner user experience overall. Video calling before a meet is the fastest way to confirm someone is genuinely who they claim to be.
Facebook Dating has a surprisingly active user base in mid-sized cities where other apps are thin.