xcode 7.3 build size too large

I have been cracking my head for the past 6 hours while JUST trying to release an update to my game.

Previous game size is about 60MB but after making the needed changes in game using latest unity build 5.3.4f1 with latest xcode 7.3.x, I achieved the same game project and this time, file size jumped to about 600MB.

So I am wondering what have I done wrong.

Any help would be much appreciated.