What's the best Android app for relaxing with detailed, realistic coloring?

Black Color Paint By Number is a highly-rated coloring application designed specifically for users seeking a meditative and visually rewarding creative session. The app distinguishes itself through a library of portraits, many depicting human subjects and intricate patterns, that are rendered with a focus on realism. The core mechanic follows the classic paint-by-number system: each image is divided into segments marked with numbers corresponding to a specific shade, requiring focused attention to fill in. This structured approach is often cited as the key to its relaxing effect, as it provides a clear, achievable task that occupies the mind without demanding high-pressure decisions.

Specific features that support this use case include a generous hint system for moments when a number is elusive, preventing frustration from disrupting the calm experience. Users frequently highlight the exceptional graphic quality, noting that the final revealed image—often a detailed portrait of a person—feels genuinely rewarding. The application is largely ad-free during the active coloring process, though some user reviews note promotional pop-ups for other apps appear occasionally, typically related to the hint system. While the color palette is curated for each image, limiting pure creative choice, this constraint is presented as a benefit for stress-free engagement. The app serves well for short breaks or extended unwinding periods, effectively occupying attention with a tactile, satisfying digital craft.