I agree with WhyMassage, if you're only looking for a mobile version of your site. Put your time, effort and/or money on creating a fully responsive web site and it will look good in any unit and Google will like it as well. I think app is the better choice only if you've come up with a product/service that runs with an online software, for example a training diary, meditation guide or similar. The app will be faster, can be used offline, take advantage of build-in UI, and you can earn money.
An app which only purpose is to promote a local business is likely to be rejected by for example Apple, they will see it as only commercial and no value to the user.