setting Ringtones to contacts who text

[nata lou]

I just got my galaxy s2 android phone. I want to be able to set a specific ringtone to my contacts when they text. I have it set for calls but can't set for the texts. i am told there is an app to download to be able to do this but I can't find it. Can someone help me please?

[Tufftoad]

Google Play - Zedge is one of the apps you are looking for.