Gullu
The Gullu app · updated 2026-11-13

A Tap to Fill Coloring App for Little Kids

Short answer: Tap to fill is the simplest way to color on a screen. A child picks a color, taps an area and it fills. You can try it free in a browser on five Gullu pages, and the app adds a magic brush, crayons, glitter and more than 1,000 pages.

The five pictures above are tap to fill, running in your browser. Pick one, choose a color and tap. There is nothing to download and no sign-up.

What is tap to fill?

Tap to fill, sometimes called tap to color, fills one enclosed area of a picture with the chosen color when a child taps it. There is no dragging and no need to stay inside a line, because the app does that part.

Who is tap to fill for?

  • The youngest children. A three-year-old who cannot yet steer a crayon can still finish a picture.
  • Small screens. On a phone, tapping a small area is easier than coloring it.
  • Small spaces. Eyes, buttons and stripes fill cleanly.
  • A calm start. Some children who avoid crayons enjoy seeing an area change color at a tap.

It is a different activity from coloring with strokes. It does not practice crayon control, which is why Gullu has both.

What does the app add to tap to fill?

Tool What it does
Tap to fill One tap colors an area
Magic brush A stroke tool that keeps color inside the lines
Crayon and marker Free strokes, like the real thing
Tiny pen A thin tool for small spaces
Glitter, patterns, stickers Decoration on top
Eraser, undo, pinch to zoom Fixing and getting closer

A parent can turn on Simple mode for a child's profile, which leaves only tap to fill and the magic brush. The page for 3 year olds shows how. If you are looking for the opposite, an app with real strokes and no numbers, see where you actually color.

How many pages can I tap to fill?

In a browser, five. They are all on the color online page. In the app, more than 1,000 pages in 47 lands. The first page of every land is free, 47 pages, and Gullu Plus unlocks the rest for US$3.99 a month, US$24.99 a year or US$39.99 once. There is no free trial.

On iPhone, iPad and Mac, Gullu has no ads. Download it on the App Store.

FAQ

What is tap to fill coloring?

A way of coloring where one tap fills an enclosed area with the chosen color.

Can I try it without installing anything?

Yes. Five pages work in a browser, with no download and no sign-up.

Is tap to fill the same as color by number?

No. In Gullu there are no numbers and the child picks every color.

Can my child change a color after filling?

Yes. Tap the area again with a new color, or use undo.

Does tap to fill work with a mouse?

Yes. In the browser and in the Mac app, a click does the same as a tap.

More about the Gullu coloring app

Take every page further in the app

Gullu puts more than 1,000 coloring pages on one world map, with a magic brush that stays inside the lines, glitter, stickers and tracing lessons. Free to download on iPhone, iPad and Mac, with the first page of every land free.

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