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ShippedGame2017
Rainbow
Adult coloring-book mobile app with a large illustrated catalog, free/ad-supported and premium-subscription tiers.

Rainbow was a coloring-book app with a large final artwork catalog (animals, food, geometry, mandalas, florals, fun and celebration themes), a 25-day Christmas coloring collection, finished app-store screenshots, an app icon/splash set, and an app-store preview video with music, plus a written app description for store listing.
Assets are split into free/ad-supported and premium-subscription artwork tiers, and final store-ready screens exist (not just concept art), indicating this app reached a shipped or near-shipped state.
My role
Solo developerDeveloper
Team
Zadzen Games · 2016 — 2018
Platforms
- iOS
- Android
Stack
- Unity
Solo developer
What I did
- 01UI/UX programming for the coloring interface and screen flow
- 02SDK integration for ads (free-with-ad tier) and in-app purchase/subscription (premium tier)
- 03Store listing assets: screenshots, icon, splash, and preview video pipeline
What stands out
- 01150+ finished illustration pages across multiple themed collections
- 02Dedicated 25-day Christmas coloring collection
- 03Free/ad-supported vs. premium-subscription content split with app-store video and description
See it in action





