I'm aware that analytics is one of the hardest things to do. Nevertheless, for a language learning app I'd appreciate some more feedback on and insights into my progress. Given that, these are the things I'd appreciate the most

* an additional, standalone dashboard page showing

* my "Daily speaking time" (please make this history scrollable horizontally :D)

* the KPIs I see for recordings already (score, correctness, clarity, filler words, pace and pauses)

* additional KPIs (variety or range of words/expressions used, number of words/phrases practiced, number of words pronounced correctly/incorrectly) off the top of my head

* social comparison: my progress compared to other learners, probably starting at a certain threshold so that it isn't demotivating

* Weekly email summary of my progress and what to do to improve it even further