I recommend this site to see where something is playing:
https://www.justwatch.com/us/movie/COHERENCE and ANNIHILATION are both now on Hulu and Amazon Prime. COHERENCE is also on Vudu with ads.
I'd recommend both, ANNIHILATION moreso.
You'll probably have to spring for a rental though, sorry.
Truth be told, the new streaming world is convenient and perfect for people who want to watch "whatever", but not good for movie-lovers like us who want to watch something specific. Amazon Prime is the best service for movie-lovers but also the most expensive.