FTS stands for 'Full Text Search', it is a hot area in CS. See Wikipedia for more information.
Yes, SQLite originally support FTS, and released FTS with FTS 1.0, FTS 2.0, FTS 3.0 and FTS 4.0. Basically, FTS 4.0 is as same as 3.0. The only difference between these two versions is performance.
NO, the SQLite library shipped by Apple does not compiled with FTS enabled.
Yes, that's why I created this project.
This project is built to show you how to link to sqliteFTS project, which is also created by me to use SQLite with FTS, and how to use FTS with iOS technologies.
To demonstrate how fast SQLite + FTS could be, I downloaded a open source Japanese/English dictionary from Professor Jim Breen's long run EDict project. Many thanks to Prof. Jim.
This app is under Apache 2.0 License. You can use it for open source/commercial project.