Upload your Android app's drawable resources and view their variants side-by-side (+ scaled within real device skins using the Device Viewer!).
See which drawables are out of proportion with their mdpi variant.
Check that all the variants you intend to make are in fact made.
Share results with designers and other colleagues.
Just want to see the damn thing working without logging in? Here's a publicly available upload result: http://www.cellebellum.net/AndroidAssetsViewer/?result_id=FormIdableValidation50905f3b3ee0e6.97611575