DokuJoy

Calm, colorful logic puzzles made for young minds—no ads, no timers, and no accounts. Start simple and grow from 2×2 to 5×5 at your own pace.

DokuJoy turns Sudoku into a calm, child-friendly logic experience designed for young puzzle learners.

Start with simple 2×2 and 3×3 boards, then progress toward larger 4×4 and 5×5 challenges. Each puzzle helps children practice logical thinking, pattern recognition, attention and problem solving at their own pace.

CHILD-FRIENDLY PLAY

• Large, simple controls • Numbers, colors and symbols • Helpful hints with no penalties • No timers or pressure • Calm sound and haptic feedback • Progress and stars stored on the device

LEARN STEP BY STEP

DokuJoy introduces new board sizes and difficulty levels gradually. Children can build confidence with easier puzzles before moving on to more challenging ones.

MADE WITH FAMILIES IN MIND

• No advertising • No analytics or tracking • No account required • No child personal information collected by DokuJoy • Parent Zone protected by a parental gate

DOKUJOY PREMIUM

The free version includes 2×2 Easy and 3×3 Easy puzzles. DokuJoy Premium is a one-time purchase that unlocks additional board sizes and difficulty levels. No subscriptions. Premium does not expire. DokuJoy uses a simplified Sudoku-style rule: each value appears once in every row and column.