Tap any area to fill it with the selected color. Every "New page" brings a design nobody has ever colored before.
How it works
Pick a color from the palette, then tap any white region to fill it — tap again with another color to change it, or use the eraser to make it white. Mandala and pattern pages are generated randomly, so there is an endless supply; picture pages offer familiar scenes like a butterfly, a rocket or a house. "Save image" exports a PNG (on phones the share sheet saves it to your photos), and "Print" gives you a clean page to color with real pencils.
Two kinds of page, endlessly supplied
Mandala and pattern pages are generated fresh every time, so the supply never runs out and no design has been coloured by anyone before. Picture pages offer recognisable scenes instead — a butterfly, a rocket, a house — for when you want something to fill in rather than a pattern to work through. Tapping a white region fills it with the selected colour, tapping again with another colour changes it, and the eraser returns it to white.
Because the fill works by region rather than by brush, nothing spills outside a line and nothing needs undoing. That makes the tool usable with a finger on a phone, which is where most colouring actually happens.
Choosing colours that hold together
Pick three or four colours and stay with them. A page using every colour available almost always looks worse than one using four.
Neighbours on the colour wheel are safe. Blue with green, or orange with red, will always sit comfortably together.
Opposites on the wheel are loud, and that is useful once. One purple detail on a yellow page draws the eye exactly where you want it.
Leave some areas white. Untouched space gives the coloured parts room and stops a mandala turning into a blur.
Work from the centre outwards on a mandala. The symmetry becomes visible as you go, and the outer rings suggest themselves.
Why colouring is calming
Colouring occupies just enough attention to crowd out rumination without demanding a decision that can be got wrong. There is no blank page to face, no skill threshold and no way to fail, which is a rare combination — and it is why colouring books aimed at adults became a genuine publishing phenomenon rather than a passing novelty.
Mandala patterns in particular give the eye a repeating structure to settle into, which is the same reason people find symmetry restful in tiles, textiles and architecture. Save the image as a PNG when you are done, or print it if you would rather finish it on paper.
Effectively unlimited. Mandala and pattern pages are procedurally generated — every "New page" builds a fresh design from random symmetry, rings and shapes, so repeats are practically impossible. Picture pages add a set of familiar hand-made scenes on top.
Can I print a page and color it with pencils?
Yes — press Print before coloring and you get a clean black-and-white page, perfect for crayons or colored pencils. Printing after coloring keeps your on-screen colors.
How do I save my finished artwork?
Tap "Save image" — it exports a high-resolution PNG. On phones and tablets the share sheet opens so you can save it straight to your photo library; on a computer it downloads.
What is the difference between mandala, pattern and picture pages?
Mandala pages are circular designs that radiate from the center with mirrored symmetry, so every region you fill repeats in a satisfying rhythm. Pattern pages tile the whole sheet with geometric shapes, while picture pages are hand-made scenes such as a butterfly, a rocket or a house. The first two are generated randomly; pictures come from a fixed set.
Can I change a color after I have filled a region?
Yes — just tap the region again with a different color selected and it changes instantly. The eraser turns a region back to white, and Undo steps back through your recent fills one by one, so experimenting with color combinations is completely risk-free.
Is coloring only for children?
Not at all — coloring books for adults have been bestsellers for years, and intricate mandalas and geometric patterns are exactly the styles adults tend to choose. Many people find that concentrating on one small region at a time helps them slow down and unwind after a busy day.