Rationales often missing or don’t make sense.
Other answers seem to test for one incredibly nitpicky nugget of info rather than to test understanding of basic concepts. I got one answer wrong because I didn’t think (and still have not seen anywhere I checked) that the Levine method requires a *moistened* swab. Every source I checked just says “swab”, not specifying moist or dry. So if I don’t happen to have the specific textbook you drew the question from, but have the WOCN-created curriculum books and the internet instead, then I get the question wrong. Excellent!
In the JWOCN exam prep series (at the end of each issue), every single question has a rationale for its answers - both why the correct one is deemed the best answer AND why the incorrect answers are not the best choice. I would highly advise this app’s creators to take the same approach.