Rodrigo Ferreira

Solo developer building for real people.

About

Brazilian solo developer based in Ireland. I build small, focused apps that solve real problems, usually starting with one for someone I know. Most recently: Color Flags, a flag coloring game built for my colorblind son after every other app on the market failed him. Full accessibility from day one: text to speech, written color labels, unique patterns per area. Always happy to talk shop: accessibility, TTS, shipping solo, or building for an audience of one first and everyone else second.

Links

Color Flags

Don't Miss The Stop - GPS Alarm

Badges

Tastemaker

Veteran

Gone streaking

Maker History

Color FlagsA flag coloring game my colorblind son can actually play
Jul 2026

🎉

Joined Product HuntApril 15th, 2018

Forums

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18h ago

Color Flags - A flag coloring game my colorblind son can actually play

Color Flags is a casual flag coloring game built for colorblind accessibility from day one. Every color has its name written out. Text to speech reads every color, screen title and fun fact out loud. Every paintable area has a unique visual pattern, so you never depend on color alone. 130+ flags. Free, no paywall, just removable ads. Built by a solo dev for his own colorblind son. Now available on both iOS and Android.