I researched free dating sites properly rather than reading a top-ten list, and the picture is messier.
Ran it alongside two other options for a month, tracking how transparent the enforcement is.
If you only test one thing on free dating sites, make it how the chat behaves on a weak connection.
Filling the profile out properly changed that one more than switching platforms did, and it reframed how much of your profile is public by default.
Where the site works it works fast; where it doesn't, whether messaging costs anything once you start is usually the reason.
After a few weeks on the site the only question left was whether the free version is a demo or a product.
Does anyone know whether free dating sites changed this recently?