The winner surprised me. Two weeks of testing both apps on the same phone, same photos, same bio: Bumble returned higher-intent matches, Tinder returned more of them. Tinder for volume, Bumble for quality, both if you are serious.
The winner is Hinge. Two weeks testing both apps on the same iPhone with the same photos and the same bio: Hinge returned higher-intent matches, Tinder returned more of them. If you want a real relationship, lead with Hinge. If you want volume or you live in a small market, keep Tinder installed as backup.