Default [Q] Android proxy debugger?

First of all im sorry if I posted in the wrong subforum... i rarely make any posts.
Anyways im looking for some sort of proxy debugger to use as a packet editor for testing some stuff. And I pretty much can't find something that can do it on my phone while using another app at the same time. It'll be like running at same time im using an app... Something like gamecih but to capture traffic if possible. (:

Thanks in advance!