This open source app reads subscan and displays as best it can which validators your rewards have come from, along with individual reward records which you can download. The idea is to provide a bit of detail on how your nomination mix is working. Nominumbers runs entirely in your browser - you can also download the zip and use it locally on your device (see the README for more info). GPL3 source code here.
This project has been kindly supported by the Kusama Treasury. You are running version 1.0rc1