This is what educational apps should be. Duck Duck Moose (now part of Khan Academy) delivers legitimate Common Core math practice without any of the garbage that plagues most kids' apps—no ads, no in-app purchases, no manipulation. Just solid skill-building wrapped in cheerful, whimsical activities.
The five activities hit different math concepts (counting, addition, subtraction, shapes, patterns) and the city-building reward system gives kids something to work toward without being predatory. The parent dashboard is actually useful for tracking progress, which is rare.
Is it the most imaginative app ever? No—it's fundamentally skill practice. But it's well-designed skill practice that kids actually enjoy, developed with real educators. For kindergarten and first-grade math, this is a top-tier choice that you can feel good about, especially since it's completely free and respects your family's privacy.
The fact that Khan Academy made all Duck Duck Moose apps free when they acquired the company is genuinely wonderful. This is how edtech should work.


