Teenydoku

Teenydoku is sudoku for children aged 4 to 7. The grids are small, 4x4 or 6x6, and each number always has its own colour. Children who can't read numbers yet can match the colours, and they learn the numbers as they play. Tap an empty square, then tap a number to put it there. Fill the grid so every row, column and box has each number once. If a number matches another in its row, column or box, both wobble and the number hops back out, so your child can see why it doesn't fit. If they get stuck, the help bulb points to a number that needs changing or a square that's easy to fill next. Every puzzle has exactly one answer, and none needs a guess. Teenydoku makes new puzzles on your iPad or iPhone, so they never run out. Pick one, two or three stars for how hard it is. There are no timers or lives. Each solved puzzle adds a star to their jar, and full jars stand on a shelf on their home…