I know this is an old thread, but I have celiac, and I used it just a week ago when I was in Winnipeg. It helped me find places that were celiac friendly. I felt the reviews gave some very insightful information, because often an establishment will have options labelled gluten free that are in fact not safe for us to eat. I typically don’t go out to eat in my hometown at all since even so-called “gluten free” dishes are usually cross-contaminated. (The reviews of restaurants here seemed to agree with me on this.)

I agree it would be nice to find a FOSS project like this, and such a project would make me want to contribute more.