Stability: solution should have been subjected to stability tests like Classic Stability Test for unrooted devices and Scaling Stability Test for rooted device. There are many stability tests, whether app is built for mobile phone or a computer, rooted or uprooted. Submitted apps should have undergone necessary stability tests.
I have no ideas what these things are, but we should probably find out.
From challenge listing:
I have no ideas what these things are, but we should probably find out.