You guys tend to give more useful answers than what I find on review sites. Paid apps often attract more serious users simply because the barrier filters out casual time-wasters.
Being upfront about your goals from the start saves months of wasted back-and-forth. Speed dating has made a comeback in both online and in-person formats which is genuinely fun.
Hinge's 'designed to be deleted' approach has made it genuinely more relationship-focused than most competitors.