I paid attention to the details this time while comparing them, which changed my answer completely. The short answer is that how the inbox is ordered becomes obvious only after a month. That held again and again across the whole period I tracked.

I tried the obvious options first a while back, and stopped assuming the obvious answer was right. What I found is that whether photos are checked before publication explains most of the complaints here. It came through clearly reliably even when I varied the time of day.

What I would put at the top of the list:

  • Look at whether the distance filter goes wide enough — the answer varies more than you would think.
  • Whether there is a web version as well as an app — the marketing never covers this.
  • Ask whether the sign-up asks for a phone number
  • How the free tier handles photo uploads — it is easy to test and rarely advertised.
  • Whether prompts give people something specific to answer — it decided things for me.

I came at this after wasting time on the wrong options while comparing them, so I am fairly confident in the shape of it. More than anything, how many photos the format allows shapes the first fortnight more than anything. The signal was clear fairly clearly even after I changed my photos. I would be curious really, the detail varies a lot by city.