Rocket Languages for Japanese as takes a fairly “white bread” approach, it just gets on and gives you the basics without really doing anything fancy. At the end of the day, no language program is going to be able to take you all the way to fluency in and of itself, and you’ll need to combine different tools, learning approaches and environments. But most of us want to minimize the chopping and changing where we can. Rocket Japanese does a pretty good job of tying everything up in a neat package.
It’s structure is a fairly “conversational” approach, with an emphasis on listening to conversations and asking you to play the role of different people within different situations. These conversations are natural enough, giving you a real sense of the language.
There is not nearly as much emphasis in Rocket Japanese on listening as you get in programs such as Pimsleur Japanese. Personally, I’m a big fan of learning predominantly through listening, so I would like to see Rocket Japanese really throwing you in the deep end a bit more with listening to more conversation unassisted by text prompts all of the way. This brings us to the issue of language and practice pacing.