Is responsive web design worth it (in my situation)?

I've both designed and developed multiple websites where I worked on making the site responsive for mobile/tablet. It's easy work, but it's extremely tedious and lengthy.

Knowing that I am a single developer, is it better to:

  1. Make the website completely responsive, but have no mobile app at launch.

Or:

  1. Don't make the website responsive, but have a mobile app for both iOS and Android.

In all honesty, I think I could do both in the same time frame, but it's just a matter of which would garner more users.