What methods and tools do you use to detect memory leaks in applications?

To detect memory leaks in iOS applications, the following tools and methods are usually used:

• Instruments (Leaks and Allocations) — a standard tool from Xcode for profiling memory. It allows you to find objects that are not released and trace their lifecycle.

• Xcode Memory Graph Debugger — visualizes the object graph in memory, helps find cyclic references and objects that are retained unnecessarily.

• Code analysis for cyclic strong references — especially important when using closures and delegates, to correctly apply weak and unowned references.

• Profiling with third-party libraries — for example, FBMemoryProfiler.

Example: when using Instruments Leaks, you run the application, perform a scenario, and then the tool will show objects that were not released and the call stack where they were created.