I think the “app version” uses the same content as the “previous content wave”.
I’ve gone through levels 1, 2, and 3 (so 90 lessons total). I’m working on 4 now, but not with so much diligence. I’ve already purchased 5 as well, so my intent is to get through it all eventually.
As a self-learner, it’s been a valuable resource. It gets me speaking, and helps me internalize some grammar points and pronunciation. It is designed with SRS principles in mind so new vocab is re-introduced less and less frequently.
Levels 4 & 5 seem to have been released more recently than 1, 2, & 3. At level 4, they finally start to introduce casual speech, which I think was sorely missing from the earlier levels. The course seems obviously geared toward business professionals, so a lot of the scenarios are business-oriented and may not be relevant to what you care about.
Overall, if you want high-quality, polished lessons that get you speaking some Japanese, I’d recommend Pimsleur. But prepare to be frustrated by overly-polite constructions and vocab you might not find useful.