About Kid Coloring Book
A small studio, a lot of crayons.
Kid Coloring Book is made by Gammerxd, a one-person indie studio that builds calm, well-behaved apps for small humans and the grown-ups who look after them. We started this app because most "kids coloring" apps on the store fall into one of two camps: pushy games full of ads and pop-ups begging for money, or paid apps with a tiny handful of pages behind a paywall. We wanted something in between — a real, generous, kid-first coloring experience that doesn't feel like a slot machine.
What we believe about kids' apps
A child's screen time should feel like a picture book, not a shopping mall. That belief shapes every decision we make:
- No accounts for children. Kids never see a sign-in screen, a password prompt, or a "share your name" box. The coloring works fine with nothing logged in at all.
- Non-personalised ads only. No behavioural profiling on kids. Ads are simple, generic banners, and they exist so we can keep the app free.
- Purchases behind a real gate. Coin packs cost real money, so we don't want a five-year-old buying them accidentally. Every purchase requires holding a "grown-ups only" button for three seconds AND signing in as a parent.
- Compliant by design. The app follows Google Play Families Policy and the U.S. Children's Online Privacy Protection Act (COPPA). No location, no contacts, no photo library access.
How the app is built
Kid Coloring Book is built with Flutter, a modern framework by Google for building beautiful, high-performance apps. The coloring canvas uses a flood-fill algorithm tuned for touchscreens, so a tap fills a shape in a fraction of a second even on modest phones. The books live in Firebase Cloud Storage, which lets us add new collections without pushing an app update.
Your child's finished pages are saved on your device — so the gallery is fully offline. You can turn the phone into airplane mode and everything still works.
Where we're going
We're a tiny studio, so the roadmap is small and honest:
- More themed books, added every few weeks (currently at 137)
- A "paint by number" mode for older kids who want a challenge
- Optional printable versions so pages can be colored on paper too
- iOS release once we can afford the Apple Developer subscription