This paper presents results of an exploratory study that examined the effects of different types of correctness feedback on children's actual and perceived performance with a math app. In the study, forty-flve grade-2 students solved easy, moderate, and hard drill questions with a math app augmented with textual, icon, and emoticon correctness feedback. Results suggested that, for the most part, neither the feedback type nor the difficulty level affect children's actual and perceived performance with the app.