Hmm, maybe you'll want to re-read my post again :P . It leaks ~16k on every swipe to unlock and if you unlock your device 5-10 times per hour (like I do), at the end of the day we'll have ~1MB of leaked memory. After 3 days of uptime, systemui on my device was eating about 7MB of heap. That's pretty high leak by all measurements.

TBH I don't think h-d and h-h leak by themselves, I'll put my bet on some buggy widget

ARM RE is the same (in principle) as x86 RE. The problem is that there is no HexRays for ARM. At least in IDA on TPB