You may see the Xcode Leaks tool showing multiple memory leaks in an iOS application built using the RMSDK.
The RMSDK uses utf::Value and other structures for data abstraction. Those structures store memory addresses in a way that confuses the XCode Leaks tool. As a result the Leaks tool will show that many blocks don't have references, while in fact they do.
At this point Instruments will show substantially more leaks than actually exist. This could include leaks of objects allocated through allocBlock.