You must have a rooted galaxy star with cwm for some of these apps to work properly.
Download link: https://www.mediafire.com/?c2x30uj56hj3vm5
Here I have included some useful applications for our samsung galaxy star. You may use them for your phone (galaxy star only). I found S - Voice actually works (with some glitches) in galaxy star. These apps will not make system slow, I don't think you will need many apps other than this. It leaves approx 150 - 165 MB RAM in my system.
Last edited by andy_ray; 1st February 2014 at 12:56 PM.
Reason: Download link added