What do you think about BetaTesting Apps? [Debate]

Hey there!

I'm new in this forum. My name is Juanjo, and I am an apps developer.

I think that beta testing is extremely important, but i have not found yet any platform that allows me to test the app with real market (both in iOS an Android).

What do you think about beta testing? Do you think it's important? What are your favorite tools to beta test?