Oil Painting - Paint by Number is an iPhone app developed by Andrei Nemtsou. It is a free game in the Games category that offers a calming and restful experience through coloring mandalas.

The app aims to provide a sense of relaxation and escape from the stresses of daily life. It offers features such as white noise, calming sounds, and soothing music to create an atmosphere of calm and tranquility. By engaging in the coloring process, users can experience a meditative effect and promote a sense of calmness.

One of the unique aspects of Oil Painting - Paint by Number is that it does not use numbers or palettes. Instead, users simply need to tap to paint, and the areas will be filled in with the desired color. As users progress, the contours of the picture gradually appear, adding a sense of mystery and anticipation.

The app offers a variety of beautiful illustrations of nature and animals, each painted with love and attention to detail. Additionally, there are polygonal illustrations that provide a unique visual experience.

Oil Painting - Paint by Number is suitable for both adults and children. It can be used as a creative app for children and as a way for adults to unwind after a long day. The app also offers the benefit of helping users fall asleep, with just 5 minutes of play before bedtime promoting relaxation.

Overall, Oil Painting - Paint by Number offers a calming and enjoyable experience through coloring mandalas. It is a great way to relax and unwind, providing a break from the stresses of everyday life.