As Xcode has visual debugger for interface many don’t go for any other tools. In my experience I have tried two different tools one is totally awesome, other seemed to have potential but disappointed me badly that I had to ask refund.
Let’s here about the “Good” Tools first. “Reveal” is hands down the best app that I have ever seen out there. I have head it about from my Coworker second time. It’s little bit expensive side $89 bucks at the time of writing but it’s going to save you a lot of time and as they say “Time is money”