FYI, you can use Factual.com to get location data for all kinds of businesses. You'll still need to source reviews from somewhere else, but this might be a useful way of ensuring you have good coverage.
(disclaimer: I work at Factual, but a) I'm commenting as an individual, not representing the company; b) I genuinely think this is a good choice for you; c) for a small app like this, the data will likely be free, so I have no financial motivation!)
That's a great suggestion @donall. I'm already crawling the web for information and not just reviews, but the location database would be awesome. Is there a specific class of program you guys have for free data?
You can get free access to the API, capped at 10K requests per day. Hopefully that is enough to be useful at this initial stage!
After that, I think pricing depends on your app. I think it is extremely favourable to small/new startups, but I am am engineer and not a sales guy, so I don't want to say anything that might be both specific and wrong... (I hope this isn't starting to sound like a bait and switch sales pitch; if you want to talk offline my gmail is donallmc).
(disclaimer: I work at Factual, but a) I'm commenting as an individual, not representing the company; b) I genuinely think this is a good choice for you; c) for a small app like this, the data will likely be free, so I have no financial motivation!)