What is the final stage in the life cycle of an object or system?

In the lifecycle of an object or system, the final stage is usually called "deinitialization" or "termination." In the context of iOS, this could be the stage when an object is released from memory (deinitialized) or when the application transitions to the termination state.

For objects in iOS, the last stage is the invocation of the destructor deinit, which allows freeing resources before the object is destroyed.

For an application, the final stage of the lifecycle is its termination, when the system calls methods that allow saving state and freeing resources, such as applicationWillTerminate.

Thus, the last stage is the moment when an object or system completes its work and releases occupied resources.