What a great idea! I am a native English (American) speaker and thought this app may sharpen my pronunciation, as I take pride-and pleasure-in speaking well and correctly. I'm quite disappointed though. The male models' pronunciation of multiple words - i.e. "could not have" - is pronounced "couldn't of" - which is nowhere near proper grammar and much closer to guttural slang one might overhear in a downtrodden locale. I'm not certain, but I believe that the intent of the development team was to improve pronunciation. If the aim was for "conversational English" they are not too far off center; if proper pronunciation was the goal, then the team fumbled.
Again, wonderful idea! Just change the description if staying with the current voice model, or keep everything the same but record a voice model speaking properly.
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