Appengine Search API vs Datastore

Question

I am trying to decide whether I should use App-engine Search API or Datastore for an App-engine Connected Android Project. The only distinction that the google documentation

Answer 1

The key difference is that with the Datastore you cannot search inside entities. If you have a book called "War and peace", you cannot find it if a user types "war peace" in a search box. The same with reviews, etc. Therefore, it's not really an option for you.