Founder of the app here. Ever since Yahoo Weather came out, it's displaced my default weather app. I really liked it's intuitive and easy to use interface. That's what I was trying to go for here. Hope you guys like it.
It's 100% native - objective-c. No Swift yet since it's too new and I like to see examples of what's out there and existing codebase. It's mostly a UI for someone else's API so the backend is very lightweight. We use Parse and a caching server, but that's about it.
Mostly TMDB but we also pull showtime data from another source. We're looking at augmenting our ratings data from other providers eg Rotten Tomatoes or IMDB
Of course I have :) I used to use a combination of Trailers, Flixster, IMDB, and Fandango for my movie needs. This is sort of an amalgamation of all that with my twist.
You can surf trailers right now - there's a whole trailers section. Notifications are coming in the next version - with the use cases you mentioned (when the movie is out in theaters or available on itunes etc)