What's the best Android app for relaxing and reducing anxiety with simple coloring?

Coloring Book is a strong contender for anyone seeking a digital tool to manage stress or quiet the mind. The app’s core paint-by-number mechanic removes the pressure of artistic decisions, allowing users to focus solely on the methodical act of filling in numbered sections. This creates a meditative flow state, ideal for unwinding after work or during moments of high anxiety. The library contains thousands of images, ranging from intricate mandalas and animals to serene landscapes, ensuring there is always a suitable picture for one's mood. A daily free picture and regular updates keep the content fresh. Functionally, the app is straightforward: tap a color, then tap the corresponding numbered zones. The color palettes are generally well-chosen, and zoom functionality helps with detailed areas. Reviews indicate users find the process genuinely calming, with many citing it as a helpful part of their daily relaxation routine. However, the free version includes occasional video ads, typically between paintings, which can briefly interrupt the tranquil experience. While a premium subscription removes ads, the free tier offers substantial content. Some users note that while most images are free, a subset requires the premium pass. For a reliable, zero-pressure creative outlet that demands minimal mental energy, Coloring Book delivers a consistent and accessible experience.