Zen Color - Color By Number by Oakever Games presents itself as a digital coloring application specifically designed to promote relaxation and mental tranquility through guided coloring activities. Positioned within the growing market of mindfulness apps, it distinguishes itself through Zen-inspired aesthetics and structured coloring mechanics that require minimal cognitive effort while providing creative satisfaction. The application features an extensive library of coloring templates organized into thematic categories including Places, Mystery, and seasonal collections. Each template employs a numbered color system where users tap sections corresponding to a color palette. The interface provides zoom functionality for detailed work, an auto-fill option for larger areas, and progressive saving that allows users to resume projects seamlessly. The color palette offers both curated selections and custom color options, though the free version contains advertisements between color selections. User experience centers around minimalistic design with soft ambient background music and subtle sound effects during coloring actions. The interface employs gentle animations and muted color schemes consistent with Zen principles. Real-world usage patterns show peak engagement during commute periods, work breaks, and evening relaxation sessions, with average session times ranging from 15-45 minutes based on template complexity. The application requires internet connection for initial template downloads but functions offline once cached. User feedback consistently highlights stress reduction and addictive engagement as primary benefits. Reviewer Murnun (September 4, 2025) specifically praises the Places category and regular content updates, while 4Norwiches (September 4, 2025) notes particular enjoyment of the Mystery category's reveal mechanic. Multiple reviewers including Terri K S (September 4, 2025) describe the application as 'addictive' in positive context, emphasizing its unwind capabilities. xkillerwandx (September 4, 2025) mentions complementary use with background media consumption. Strengths include extensive content library with regular updates, intuitive interface requiring minimal learning curve, and effective execution of its relaxation premise. Limitations involve occasional advertisement interruptions in free version and limited social sharing features compared to competitors. The application serves best as a digital alternative to physical coloring books for users seeking structured creative activities without artistic pressure, particularly effective for short stress-relief sessions rather than extended creative projects.