Not knowing what "number of gaps" means has no consequence. Just use the app.

If that's true then why include it at all? From a UX perspective you don't want to throw a bunch of configuration options at the user before they even know what the options mean.

It's a hurdle people have to take; and its eating from their 1.5second attention span. Some will get stuck or leave. OP asked for thoughts, this is to help him convert more people.