I'm going to be honest - I don't think the app matters as much as your approach. I use Tinder (yeah, I know, basic) but instead of "hey," my opening message is always something specific about their profile. If they have a photo hiking, I ask about the trail. If they mention a book, I ask what they're reading now. For introverts, the key is: ask questions that YOU would actually want to answer. If you hate "how's your day," don't ask that.