Most Helpful Guy
Not sure about Tinder as I don't use it, but for dating sites, I prefer to just meet the person face to face for the first encounter in a safe social place. You can't really get a good read on a person via texts, due to lack of body language and facial expressions... not to mention anything could be falsified. At least with face to face, there's more capacity to identify all this.
Most Helpful Girl
I had tinder maybe a week before deleting it, and I never met up with anyone on it, so I'm not entirely sure how it works.
However, if the common thing is to ask someone out quick and he's waited over a week, I'd almost see it as a good thing. Sounds like he's not the guy with a lot of tinder hookups.