Happy Colour – Colour by Numbers is a board application offered by X-bow. It has more than hundred million downloads on the Play Store. Fill the colors with taps in thousands of amazing pictures.
Overview

Happy Colour is a coloring book app that provides thousands of hand drawn pictures by professional artists. You can color these pictures. It shows the numbers on each part of the picture and the color palettes with the same number where it is needed to fill. You just need to select the color and tap on the part of the picture to fill it. When you select a color, you will see the highlight areas on the pic. So you can easily know where that color is required. When that color is filled completely, it will be marked as ✔. Fill all the colors in the picture to complete it. You can also save it to your gallery. This app releases a new picture everyday. In the daily tab, you can see the pics released on any day of the month or year. You will not see a picture repeated on any day.
User-Friendly Interface

It has a simple-to-use interface. It has four tabs on the homescreen: Library, Daily, My Feed & News. You can navigate them from the bottom navigation bar. It shows the category list in a bar and the related pictures in the grids. It saves all your completed pictures or in-progress pictures in the feed tab. In the coloring interface, it shows the color palettes bar at the bottom. Pinch the picture to zoom in/out and drag with your finger to move the picture. You can also change the app’s theme. It comes with 3 amazing themes.
35+ Categories of Pictures to Color

It includes more than 35 picture categories. You will find Nature, Flowers, Mandalas, Animals, Art, Birds, Blend, Butterflies, Fantasy, Horoscopes, Marine, Patterns, Sport, Tattoo, Vehicles etc. pictures. It also has Marvel’s series pictures, Tom & Jerry and Disney’s popular characters. You can color them all. Choose Captain America or Iron man, Tom or Jerry, Lion King or Winnie the Pooh, the choices are unlimited.