It is such a shame. Rocket has the potential to be really good, but lack of attention to detail and poor explanations mean that it fails to reach its potential.
I have almost finished my Rocket Korean course. I have benefited from it, but only because I have a Korean wife, who has been able to explain things that Rocket have left vague, not explained well or just got plain wrong. First, the good things. The reinforcement process (Flashcards, oral repetition and so on) is excellent and has helped things to stick in my mind. The voice recognition software is also pretty good. It is weak on short words of one or two syllables, but in general works well. The audio conversations and reinforcement within them are also decent. There are three big problems with Rocket, however. Firstly, it’s explanations of grammar are not very clear and sometimes contain errors. Secondly it illustrates concepts with sentences that are far too complex and contain sections which are not explained. This is incredibly frustrating, because it means that you end up rote learning a lot of phrases rather than learning how to construct your own sentences. Finally the reference material and structure is very weak.
Response from Rocket Languages
Response from Rocket Languages: Hi John - Thanks for the detailed feedback. We have recently added in subtitles to the Rocket Korean Interactive Audio course. That should help with finding the correct position. We are also looking at adding in "bookmarks" so that certain points can be highlighted for future reference. We will email you to find out more about some of your other points!