If there's no reply: you know where you stand.
We always suggest you update travel plans with something like "ETA".
Researching this stuff is a bit like going down a rabbit hole, never knowing where you're going to end up.
We have divided the apps into a main group and other apps we have stumbled across in our travels. We first mapped gay apps in 2015 but, since then, the market has become less crowded with apps like Grindr, Scruff and Hornet rising to the top while others have fallen by the wayside, including Chappy which closed in early 2020.