Is one memory leak normal for an app?

I tested my app with the L开发者_如何学运维eaks tool to determine leaks. I resolved all leaks but one. This one seems difficult to remove. I am working on it but not sure what will remove the leak.

Is it normal for apps to have one or two leaks which don't leak that much memory over the usage of the app?

A memory leak is a bug much like any other bug. They are very easy to measure, though, and in some situations they can cause fatal crashes, so a lot of effort is put into dealing with memory leaks.

But most apps, memory leaks or not, have bugs in them. And a bug isn't automatically a blocker just because the bug causes leaking of memory.