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hktitan/duolingo

v2.0.0MIT

The Duolingo playbook as agent skills — retention, streaks, gamification, learning science, curriculum, efficacy measurement, metrics, experimentation, growth, brand, voice, culture, hiring, platform and mobile engineering, observability, and LLM feature design. Distilled from 750 posts on blog.duolingo.com plus the Duolingo Handbook and Design System. Start at the /duolingo router; design and UI craft routes out to design-engineering.

duo-localization

Ship your product to people who do not share your language, script, reading direction, demographics or fluency with software — and decide which markets that opens. Covers writing into the register users actually speak instead of the formally correct one, why device locale is a bad proxy for intent, right-to-left as a component problem rather than a string problem, why a copy win in one market does not port, sidestepping grammatical defaults that assert things about the user, how layout silently reverts your content decisions, translating to a consumption budget, and giving local teams authority to diverge from the source text. Use when someone asks how do we launch in another country, should we just translate this, why is conversion worse in this market, does our app work in Arabic or Hebrew, why did our winning experiment fail abroad, or who should own translated copy.

Version
2.0.0
License
MIT
Read SKILL.md at the source

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