funny thing is the app has not changed in like 100 years. at this point it could probably be maintained by like a team of 5.
hate to sound like a cliche but grindr could be recreated in a weekend with rails or django. pretty sure the app is a webview. it's truly stuck in 2012-2014.
the hard part of that app is just the scale... but a handful of servers running elixir/erlang would handle it without breaking a sweat.
Funny you should say that - I’m an Erlang dev and Grindr has tried to recruit me in the past. Apparently they already use it.
(Whoever was responsible for renewing the certs apparently got fired...)