Substack
A design blueprint Spectr produced from Substack. Scroll to look closer.
Clone Substack iOS down to the serif reader, orange Subscribe, and inbox
A production-grade design spec reverse-engineered from the Substack iOS app — the long-form post reader, the orange Subscribe paywall card, the publication header, and the chronological inbox. Every brand token, the editorial serif reading rhythm, the rationed orange, and each elevation level is captured so an AI agent can rebuild it screen for screen.
Use it as the baseline for any newsletter, publishing, or long-form reading app: a clean white serif page, one rationed orange Subscribe CTA, a chronological subscription inbox, and Notes. Substack Orange #FF6719, paper white #FFFFFF, reading ink #1F1F1F, the soft charcoal #121212 dark canvas, and the 1.65 reading line-height are all specified to exact values.
Screens documented
- Post reader with serif body and pull-quote
- Subscribe paywall card mid-post
- Chronological subscription inbox
- Publication header with Subscribe
- Bottom action bar with like and restack
- Notes short-form companion feed
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 Substack blueprint translates cleanly into an Expo Router app structure.