Duolingo
A design blueprint Spectr produced from Duolingo. Scroll to look closer.
Duolingo design blueprint — build a gamified learning app
A full spec of Duolingo — lesson paths, streak mechanics, XP animations, league screens, and the iconic character illustrations — reverse-engineered from the iOS app.
Use this as the blueprint for any gamified education or habit app. Every reward animation, progress indicator, and hearts-based retry flow is documented.
Screens documented
- Lesson path
- Lesson exercises
- Streak + hearts
- Leagues + leaderboards
- Profile + XP
- Store + gems
What a Spectr spec includes
Screen-by-screen documentation, complete design system (color, typography, spacing), navigation map, component library, implementation notes, and a Claude Code prompt — everything an AI coding agent needs to build.
Turnaround
Most mobile apps produce a full spec in under 90 seconds from a single screen recording. Upload your own MP4 and watch the blueprint generate live.
Why not a design file?
Design files don't compile. A Spectr spec is optimized for AI coding agents like Claude Code — it produces working code on the first prompt, not layered artboards.
Target stack
Every spec targets Expo SDK 54 and React Native on an iPhone 15 baseline. The Duolingo blueprint translates cleanly into an Expo Router app structure.