Coincidence- Yesterday I have tried out Speechling for the first time. For ten recordings per month you get a free audio review the next day.
Really helpful - first of all you can try out to record as often as you like and compare to the given audio. This alone is useful. 
Second the review discovers details. I pronounced my tones really well in these easy sentences, - I think, - Google understood the same recordings of me, - but I still had two little mistakes and they were told me. The tone of 人 in 美国人，and the third tone in the 32 combination 起来 wasn’t deep enough。
So, I will go to Speechling once a month and try out 10 sentences. There is also an option for advanced: Instead of reading 10 sentences, you can also answer freely to 10 questions.
2 Likes