Microphone software improvement?

[dragonrider11167]

Duolingo has really helped my spanish vocabulary/reading/writing skills, but the microphone software seems a bit lax. I've been testing it out on an iPad, and it seems to let anything go. For example, I can say things in a completely terrible [fake] southern accent (e.g. yah kweearo unna mansana), and it says "you're correct". Is there any way to improve it? (Also, is it any better in other languages?)