Since shutter speed is a hardware issue, I'm not sure an app would help. Do you mean that pictures end up looking really blurry and out-of-focus? If so, you MAY just have to hold the camera SUPER steady when taking the shot, which is really annoying, I know.
If you can, download Instagram and see if it improves the look of your pictures....I recommend it heartily.
Thanks for your comment, now I have a solution. Recently, I have upgraded from Android 2.0.3 Gingerbread to 4.0.3 Ice Scream Sandwich. My camera now is faster than previous version. it capture a pics faster, but another problem come up with new version.
After upgrading, my camera produce a shutter sound once I take a pics, as you may be aware that in some countries does not allow to use a camera with a shutter sound, therefore, I don't really like it as I am a traveler.
Second issue is the camera app is still poor, it does not improved as in a new version of Android. The Camera does not have a date print once you take a pictures. All this need to be improved in future version beside ICS 4.0.3 right?
Anyway, if you have any solution to solve the above-mentioned, please share with me. THANKS