The question isn't so much 'what do people need?', but 'who is capable of using a smartphone that doesn't already have a dating app specifically tailored to their needs?'
The answer is pretty clear, and as it turned out I had already thrown together some concept art to reinforce a joke I had made early that evening, which in hindsight was probably the reason I was drinking beer in the shower wondering if an otter could even use a smartphone.