Color by Number：Coloring Games

What it does

Color by Number is a mobile coloring app focused on pixel art. Users can choose from a vast library of pre-made templates or import their own photos to convert them into colorable pixel art. The core experience is a relaxing color-by-numbers game, but it's layered with significant gamification and social features. Users can earn currency, complete daily challenges, and share their finished artwork with a community of other creators.

Where it shines

The app excels at making the creative process feel rewarding. Completing an image triggers a satisfying animation that reveals the final artwork in a time-lapse (04:17), providing a great sense of accomplishment. The "Color Quest" feature (00:27) introduces a daily challenge system that encourages habit formation by rewarding consistency with medals and coins. However, the standout feature is the ability to import personal photos (07:05). This transforms the app from a simple coloring book into a personal creative tool, allowing users to create art that is uniquely meaningful to them.

UX highlights

Gamified Tool Discovery: Instead of a boring tutorial, features like the "Bucket" tool are unlocked as rewards during gameplay (01:20), making learning feel like an achievement.
Intuitive Coloring Controls: The app supports both tapping individual pixels and a long-press-and-drag gesture for quickly filling in larger areas of the same color.
Helpful Zoom Loupe: When coloring, a magnifying loupe appears above the user's finger (00:52), ensuring precise taps without obstructing the view of surrounding pixels.
Engaging Community Feed: The social feed (04:53) provides a constant stream of inspiration and social proof, showcasing what's possible with the app and encouraging users to create and share.
Clear Progress Tracking: On the canvas, colored numbers become grayed out, giving users a clear visual indication of their progress within each color section.
In-App Economy: The use of coins for power-ups adds a strategic layer to the gameplay, allowing users to earn or purchase advantages.

Monetization & growth

Monetization is introduced immediately with a soft paywall upon the first launch (00:05). It offers a 3-day free trial that converts into a weekly subscription, a model designed to capture high-intent users quickly. The app also features an in-app economy built around coins and power-ups. Users can earn coins through daily challenges or receive them as free gifts (05:32), but they can also purchase them in bundles ranging from $5.99 to $99.99 (05:28). This dual system caters to both paying and non-paying users. Growth is driven by the social sharing feature (08:47), which encourages users to post their creations, effectively turning the user base into a content creation engine and viral marketing channel.

Who it’s for

This app is designed for a broad audience seeking a relaxing, creative outlet. This includes casual gamers who enjoy satisfying progression systems, adults looking for a mindful activity to reduce stress, and creative individuals who have an affinity for pixel art. The community features also make it a great fit for users who want to share their art and connect with like-minded creators. The photo import function appeals to those who want to create personalized artwork from their own memories.

Notes & opportunities

While the direct-to-paywall approach is efficient, it might deter users who prefer to experience the app's value before committing. The main library screen is quite dense with various categories and icons, which could feel slightly overwhelming initially. A key opportunity would be to enhance the sharing functionality. For instance, generating a time-lapse video of the coloring process for export to social media platforms like TikTok or Instagram could significantly boost the app's viral potential outside its own ecosystem.