I don’t know if this will help or not, but it’s pretty much a straight-forward tool to record your voice and compare it with the native speaker’s pronunciation. After that, you could re-record your pronunciation until you feel it sounds closest to the native speaker’s.
I’ve only used it for a bit until I needed to give it up due to my current load of other SRS tools. So maybe you’ve tried it before and given it up for the same reasons as well.