Cubtale

Duolingo ABC teaches reading through phonics, letter tracing, sight words, and short stories - same game-like approach as regular Duolingo. Ages 3-6. Completely free, no ads, no subscription. Hundreds of bite-sized lessons that kids actually want to repeat. From the makers of the world's most popular language app.

Toca Boca World is a massive open-ended play space where kids create characters, decorate homes, run shops, explore locations, and make up their own stories. No goals, no scores, no "right way" to play. Free download with some locations. Subscription or location packs unlock more. Ages 4-9. Over 100M downloads. The digital equivalent of an infinite playset.

Pok Pok is a Montessori-inspired open-ended play app for ages 2–6, featuring hand-drawn animations and calm, exploratory digital toys. It deliberately avoids scores, timers, and reward systems. New toys are added regularly with the $3.99/month subscription.